This answer only covers professional swimming pools, so ignores inflatable or self-build swimming pools.

In general, there are three different types of swimming pool, each of which comes in various models.

• Swimming pools constructed in-situ and covered with liner, (mosaic) tiles or just cement.
• Vinyl-ester swimming pools supplied complete as a single unit ex-factory.
• Polypropylene swimming pools.

If you require further information, please contact our Starline sales team.

Each type of swimming pool has its pros and cons, but it’s essential to compare similar products.

The pros and cons of the different swimming pools:

• Swimming pools constructed in-situ and covered with liner, (mosaic) tiles or just cement.

The biggest benefit of a self-build swimming pool is that its form is free, so you can custom build it. However, the dimensions of swimming pools are almost always the same so this benefit is less substantial than it seems at first glance.

The drawback of swimming pool liners is their limited design life (5-8 years) and the risk of bubbling, ruptures or disintegration. Mosaic tiles can also corrode quickly in swimming pool water.

• Vinyl-ester swimming pools are supplied complete as a single unit ex-factory.

Firstly, one important difference is that a Monoblock swimming pool is produced in a production hall free of external influences, such as weather. A self-build swimming pool on the other hand is constructed on location in your garden. Monoblock swimming pools are made using a mould, so they can be installed relatively quickly. Because it is made of a single piece, the Monoblock swimming pool is watertight and is free of seams.

At Starline, the Monoblock swimming pool is not only made as a single unit, but is also fully prepared at the factory as a complete turnkey swimming pool, including all fixtures, pipework and accessories.

Self-build swimming pools involve a longer production process, as they are built to order. The Monoblock swimming pool can be installed in the garden in one go, keeping any nuisance to a minimum.

• Polypropylene swimming pools.

Polypropylene swimming pools are much less appealing in terms of quality and appearance than genuine composite swimming pools. Polypropylene is usually selected for reasons of cost.

That is the key question, and the answer depends on many different factors: what are your specific requirements, what is your budget, what is the make-up of your family.

It is of course also important that you have the room in your garden to install a swimming pool. But the location of the swimming pool is a key factor too, as is the location of the technical systems. These must be placed in a space that is moisture and frost resistant. So you need to factor in the availability of such a space.

In short, there are a lot of factors to account for. So don't take the decision lightly, and get some good advice. We would love to help you with this. Either contact our Starline sales team or call our Starline Dealer directly.

Since 2010, it is no longer necessary in most cases to request a special permit for installing a swimming pool. In the Netherlands, go to www.omgevingsloket.nl to carry out a permit check to see whether or not you need one.

Starline is the only Dutch and Belgian swimming pool manufacturer in the Benelux. We are the only factory that actually designs its swimming pools in the Netherlands and Belgium, producing them there 100% ourselves to the highest standards.

All of our competitors in the Benelux import swimming pools directly from countries in Eastern Europe, or from China, Australia and the United States. Clearly different standards apply in these other countries in terms of quality, durability and material use.

If you require further information, then contact our Starline sales team.

Starline has been supplying swimming pools continually for 35 years already, making it the oldest and most experienced manufacturer in the Netherlands and Belgium.

None of the other competitors in the Benelux have been operating as long, or have switched, voluntarily or otherwise, to other activities in the meantime. This is important as there is a lot of talking big when it comes to long warranty periods by companies that don't operate on the market for long or that have a history of calamities.

So always check how long a company has been operating on the market uninterrupted and don't be tempted by long warranty periods that offer a false sense of security.

Starline only uses the best high-grade raw materials available in the market that are produced sustainably by reputable companies. To this end, Starline applies long test periods and is fully transparent in the type of materials used.

Many competitors use terms like ceramic, Kevlar, etc. that are either not used at all or add no value whatsoever, and in many cases are even misleading. Also cheaper raw materials are often used of a more dubious quality.

So always check which raw materials are used in the product you are being offered.

If you require further information, then contact our Starline sales team.

Starline sells swimming pools that feature flat bottoms and upright sides with the surfaces having the highest degree of flatness, straightness and smoothness. The steps we use are also to the highest standard of finish that no one else manages to surpass. Starline dares to suggest that it makes the best swimming pools in the world.

The products of many competitors are in practice of a lower quality than the brochure or internet image suggests. Consumers often do not have any material for comparison and simply accept a lower-quality product, without even being aware that this is the case.

So always check in advance – at Starline you are even welcome to visit our factory during production, or pop along to our showroom where we'll show you some of our models.

If you require further information, then contact our Starline sales team.

Starline delivers a fully complete product, with all fixtures (lights, injector nozzles, skimmers, jet streams, pipework, cover, steps and other accessories) having been pre-assembled in the factory, under the full responsibility of Starline and with a full Starline warranty. This makes Starline entirely unique.

If you require further information, then contact our Starline sales team.

Starline is the only manufacturer to supply the full range of technical systems, including filters, pumps, dosing, disinfection and controls, so you get everything from a single trusted party.

If you require further information, then contact our Starline sales team.

Starline has a very reliable network of Starline dealers. These are reputable companies with trained and qualified personnel. Each Starline dealer has followed an intensive training course at Starline. What's more, Starline even has its own national service team to support our dealers. Dealers are easy to find on the Starline website.

The swimming pool segment is an open market where there are sadly too many parties with insufficient know-how and expertise. So take care with who you contract for your pool.

If you require further information, then contact our Starline sales team.

Starline and its partners use open and complete quotations that specify all possible costs. This includes product prices, informing you as to which products are being offered. But also includes installation costs, working hours and other costs.

Many parties work with incremental quotations, with all sorts of hidden costs only coming to light at a later stage and covering materials that are not comparable in terms of quality.

If you require further information, then contact our Starline sales team.

The Starline website allows you to compare the different Starline swimming pool lines. Simply tick off the swimming pools you wish to compare via this link.

If you require further information, then contact our Starline sales team.

Our Starline swimming pools are available in various sizes. There is our Ergonomic line, which is available from a length of 7 metres and a width of 3.5 metres.

If you require further information, then contact our Starline sales team.

Our effective approach means we could have your swimming pool up and running within six weeks. The planning schedule always depends of course on your Starline Dealer. Contact them directly for information on delivery times.

If you require further information, then contact our Starline sales team.

It depends entirely on what you really want: if you want the water of your swimming pool to be filtered fast and are willing to fund the extra cost, then this is not necessary. A variable speed pump takes longer to filter, but will save you between 200 and 400 euros annually in energy costs. This is because you can choose for yourself at what speed the pump will filter, based on what your swimming pool requires at that moment. What's more, a variable speed pump generally lasts longer than a standard pump.

If you require further information, then contact our Starline sales team.

One way to reduce energy use is to purchase a Roldeck. This is an automatic swimming pool cover that reduces heat loss by as much as 60%. This means you save on the heating costs of your swimming pool.

If you require further information, then contact our Starline sales team.

Starline is the only manufacturer with its own production facilities for swimming pool covers that are entirely and fully geared to our swimming pools, including motors and chassis. This means that everything from engineering to production fall under the full responsibility and warranty of Starline. And that makes Starline entirely unique anywhere on earth.

If you require further information, then contact our Starline sales team.

The Starline website automatically calculates which dealer is closest to you, so visit our website to check this out.

Yes, of course, you're always welcome, but an appointment is preferred so we can be sure that one of our swimming pool advisers is available to help you.

Periodic maintenance to your Starline swimming pool and products is very important to ensure it has a long lifespan, but also specifically to comply with the warranty conditions. Schedule an appointment with your Starline dealer in good time.

If you require further information, then contact our Starline sales team.

Contact your Starline Dealer for this (find your closest dealer on our website).

Contact your Starline Dealer for this (find your closest dealer on our website).

The ideal of every swimming pool owner is a clean, sterile and clear pool free of bad odours and health risks. The quality of the water requires the necessary care and attention. A filter system with a decent capacity and the correct water-treatment equipment take care of this to a large degree.

You can of course contribute to the quality of your swimming water yourself to increase your aquatic enjoyment. Measures include closing your Roldeck directly after use, removing any leaves from the water, and cleaning the bottom/sides using a pool cleaner.

Additionally:

A: Ensure good water circulation during the day;
B: Ensure that the pH has the correct value (7.0-7.4)
C: Ensure good disinfection, chlorine/salt/ioniser/UV/ozonator.

Tip: Good weather advice.

In extremely hot weather, it is especially important to filter thoroughly. With swimming pool temperatures of 28-30 degrees Celsius, we recommend filtering for 18-20 hours a day. It is also important to minimise water evaporation and algae formation. So close your Roldeck swimming pool cover promptly after use.

This requires a test set, often combined with a chlorine tester. Use this test set to determine the pH value and chlorine concentration in the swimming pool water. Easy-to-read colour scales guarantee the right reading.

At a low pH value, correction uses PH PLUS.

At a low pH value, correction uses PH MINUS.

Correction must always be carried out before other products are added. Testing must be carried out at least once a week.

If you require further information, then contact our Starline sales team.

For normal use of the pool, a base chlorination of 2.0 ppm is adequate (if organic chlorine products are used, a minimum quantity of 1.0 ppm must be used). It is also recommended to regularly cause a temporary increase in the chlorine value by shocking with calcium granulate

Algae are micro-organisms that construct organic substances from inorganic substances, carbon dioxide and water.

The propagation and proliferation of algae occurs via spores that are spread everywhere together with dust in the air, causing them to enter all swimming pools, even covered or indoor swimming pools. Managing the composition of water is intended to keep the content of organic contamination as low as possible. Algae formation as a source of organic contamination must therefore be avoided as far as possible. The growth of algae is easy to prevent by regularly (e.g. once a week) giving the pool water a chlorine shock. Calcium granulate is an excellent agent for this purpose.

Before closing the Roldeck, first remove any leaves or dirt. This prevents the roller recess from also becoming contaminated. Clean the canopy of the Roldeck using a high-pressure hose and soft brush or sponge. Also clean the slats. We recommend cleaning the slats of the Roldeck at least twice a year with a high-pressure hose and a hard brush. Algae may develop both on the top and on the underside of the Roldeck. Lime scale could also develop on the top of the slats. In that case, first moisten the slats by spraying a descaler across the entire cover using a spray gun. Allow this to penetrate for 1 or 2 hours. You can then rinse the Roldeck off in rows from left to right. In this way, you wash off all the limescale from the grooves.

• Check whether the plug of the transformer is in the socket and that the Dolphin is connected to the transformer.

• Clean the following elements:

  • The filter bag – perhaps you need to clean this thoroughly in the washing machine

  • The protective grid around the filter bag

  • The inlets on the underside of the Dolphin

  • The pump impeller so it is free of dirt. This can be accessed by rotating part No. 16 a quarter of a turn.

Contact your Starline Dealer for this too (find your closest dealer on our website).

• After each use, change the diagonal angle of the handle.

• Place the transformer in such a way that the Dolphin can access all walls properly.

• When clearing up the Dolphin, you must ensure that the cable is hung over the caddy in large loops (never wrap it around your arm).

• Occasionally remove the cable from the transformer and roll it out over its entire length. Iron out the cable by hand (from the Dolphin towards the plug), removing any knots and tangles as you go.

Contact your Starline Dealer for this too (find your closest dealer on our website).

• Check that everything is clean: filter, impeller, impeller housing, etc.

• Replace the PVC brushes with a Wonderbrush. Enquire about this from your supplier.

• Check the water temperature (must be above 18 °C). The chlorine and pH values must remain at the required level. You can obtain further information about water quality from your supplier.

• Make the Dolphin heavier or lighter by adding or removing the handle floats. If the Dolphin begins to float, remove one of the floats. If the Dolphin is too heavy, add a float to the handle. NOTE: the fuller the filter bag, the heavier the Dolphin becomes. The number of floats will then need to be adjusted.

• Place above inlet limiter

• Check the supply voltage of the transformer. This should around 220 Volt (+/- 10%).

• It's possible that the sides are too slippery, so clean them first using a swimming pool brush.

Contact your Starline Dealer for this too (find your closest dealer on our website).

We recommend cleaning the slats of the Roldeck at least twice a year with a high-pressure hose and a hard brush. Algae may develop both on the top and on the underside of the Roldeck. This can be resolved by diluting the chlorine with 50% water and pouring the solution over the slats using a watering can. Limescale could also develop on the top of the slats. In that case, first moisten the slats by spraying a descaler across the entire cover using a spray gun. Allow this to penetrate for 1 or 2 hours. You can then rinse the Roldeck off in rows from left to right. In this way, you wash off all the limescale from the grooves.

No, we do not sell directly to consumers. Contact your Starline dealer.

Contact your Starline Dealer for this (find your closest dealer on our website).

Contact your Starline Dealer for this (find your closest dealer on our website).

Contact your Starline Dealer for this (find your closest dealer on our website).

Contact your Starline Dealer for this (find your closest dealer on our website).

Order Sundance parts from Jozon inSchijndel.

We have the solution for you: Starline Premium Pool Coating. Your swimming pool will be as good as new, with two layers of durable and top-grade colour coating. This colour coating is made of a specially developed and patented plastic. Give you precious property a new lease of life.

If you require further information, then contact our sales team.

Expressed as ppm (parts per million), this is a measure of concentration levels. One ppm is one unit weight of a one solution per million units weight of another solution. In water analysis, ppm is equivalent to Mg/l

If you require further information, then contact our Starline sales team.

The name "pH" may be the abbreviation of "pondus hydrogenii". Literally this means "quantity of hydrogen". The pH therefore is an indication of the number of hydrogen protons.

‘Water is made up of H+ protons and OH- ions, which translates into a scale of 0 to 14. For pure water, there are as many H+ as OH- ions present, which indicates a neutral value. When there are more H+ protons, then the pH value is below 7, and we refer to this as acidic. An overweight of OH- ions, with a pH value below 7, indicates an alkaline solution.

The basis of a clean, sterile and clear swimming pool free of foul odours and without any risk to health begins with the right pH value. This value should be between 6.8 and 7.8. The exact pH value depends on the situation.

There is no unit of measurement for expressing pH!

Good quality pool water depends to a large degree on the right pH value. The pH value is a measurement that provides information about the acid or alkaline reaction of the water. At a pH value of 7, the water is neutral.

A higher pH value may cause red eyes and skin irritation (and not the chlorine concentration, as is often mistakenly assumed), and the effect of the chlorination is reduced, leading to greater levels of limescale deposition. At low pH values, the same symptoms arise, and metal parts are subject to corrosion too.

Continual checking of the pH value and correction where necessary are therefore extremely important.

If you require further information, then contact our Starline sales team.

Although you wouldn't expect it directly, the water temperature is a key factor for swimming water quality. The higher the temperature, the more algae and bacterial growth is enabled. Skin oils will also be released, which also has an impact on total water quality or balance.

The wrong temperature has an effect too on the formation of osmosis, and this has consequences for the warranty conditions.

If you require further information, then contact our Starline sales team.

Alkalinity is all substances in the water that can neutralise small amounts of acid. Alkalinity ensures that the pH does not become too acidic or too alkaline. It also adds carbon to the water. Alkalinity stabilises the water at a pH value of 7. The value should be between 100 and 150 ppm. But if the acidity of the water gets too high, the alkalinity if reduced.

If you require further information, then contact our sales team.

In water chemistry, alkalinity is expressed in ppm or mg/l or the equivalent of calcium carbonate.

The total alkalinity of water is the sum of three types of Alkalinity: carbonate, bicarbonate and hydroxide alkalinity.

If you require further information, then contact our sales team.

The (water) hardness of drinking water or mains water in the Netherlands is generally expressed in German degrees. Hard water means a high level of calcium and magnesium.

Drinking water companies in the Netherlands use the following (German degrees dH) scale: 0–4° dH very soft, 4–8° dH soft, 8–12° dH average, 12–18° dH quite hard, 18–30° dH hard.

The average hardness of fresh swimming water is between 5.5° and 14.5° dH, which corresponds with the values between 100 and 250 ppm.

When the lime in the swimming water is in balance, this means that there is no limescale deposition or turbidity, or that no sedimentation of lime can take place. The lime is then entirely dissolved in the swimming water.

If you require further information, then contact our Starline sales team.

Chlorine is one of the most commonly used disinfection agents. It can be used widely and is very effective at combating pathogens. The chlorine value can be divided into three terms: the total, the free and the bonded chlorine value.

The total chlorine value indicates the amount of chlorine the water contains, but says nothing about its action. Normal value: 0.5–2.5 ppm. The free chlorine value indicates how much active chlorine your water contains. This concentration determines the level of disinfection. This lies between 0.5–2.5 ppm (indoor pools 1.0 ppm, outdoor pools 2.0–2.5 ppm). Bonded chlorine is no longer active. It has completed its disinfecting action and even acts against further disinfection. It smells strong and can irritate eyes and mucus membranes. The lower the bound chlorine value, the better. Maintain a maximum value of 1.0 ppm. The bound chlorine value may never exceed the free chlorine value.

If you require further information, then contact our Starline sales team.

After a busy weekend of intensive swimming, or thunder storms, or sultry weather, your pool water will need some extra attention. The water needs time to recover. You can hasten this recovery by carrying out a shock treatment. You simply add an extra dose of chlorine to your water (4x the normal amount, but no more than 300 grams per treatment). This shock treatment really does the job.

If you use Superzuurstof, you can give an extra Superzuurstof boost during intensive use of your swimming pool.

Cyanuric acid protects the freely available chlorine against UV rays in outdoor pools. The desired value of cyanuric acid is 20 to max. 80mg/L. If this value is too low, you may raise it (if no ioniser is fitted) by adding stabilised chlorine, such as Starline chlorine tabs 90%, or Starline super granulate 63%.

If the value reaches its upper limit of 100mg/L, all the freely available chlorine in the water will be removed. This means that the freely available chlorine loses its effectiveness. To prevent this, adequate backwashing is required. Advice: on average 1x per week at least 2.5 minutes (depending on pump and filter capacity).

If you require further information, then contact our Starline sales team.

Water used to fill swimming pools and the recirculation water is usually mains water with a constant and known composition. Adding chemical products to the pool water, for disinfection, oxidation and pH management changes the original composition. Other factors, such as temperature and water motion may also cause changes to the (desired) composition of the water.

Depending on the composition of the pool water, the following phenomena may arise:

• The water behaves neutrally: no effect on metals or lime and no lime discharge.

• The water is aggressive relative to unprotected metals and lime-bearing materials, such as the joints between tiles, concrete, etc.

• The water shows a tendency to lime discharge, and the formation of boiler scale.

So depending on the composition, swimming water may show either lime aggressive (limescale-dissolving) or lime discharge properties. Too control these properties, use the so-called Langelier Index.

If you require further information, then contact our Starline sales team.

Granulate for lowering/raising the pH value.

For the correct dosage, refer to the product packaging. The dosing of chemicals must be carried out with care. It is better to apply multiple doses than to add too much in one go.

NOTE: never dose chlorine and acid (pH-) at the same time due to the risk of chlorine gas formation.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

Organic chlorine tablets, slowly dissolving. Do not affect the pH value of the water. Use: 200 grams per ca. 1–7 das per 50 m3 pool volume.

For the correct dosage, refer to the product packaging. The dosing of chemicals must be carried out with care. It is better to apply multiple doses than to add too much in one go.

NOTE: never dose chlorine and acid (pH-) at the same time due to the risk of chlorine gas formation.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

Organic supergranulate, fast dissolving. Use: 100 grams per 14 days (ca.) per 10 m3 pool volume.

For the correct dosage, refer to the product packaging. The dosing of chemicals must be carried out with care. It is better to apply multiple doses than to add too much in one go.

NOTE: never dose chlorine and acid (pH-) at the same time due to the risk of chlorine gas formation.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

This is inorganic calcium chlorine granulate, fast dissolving.

For the correct dosage, refer to the product packaging. The dosing of chemicals must be carried out with care. It is better to apply multiple doses than to add too much in one go.

NOTE: never dose chlorine and acid (pH-) at the same time due to the risk of chlorine gas formation.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

Specially suited to use with soft water and in combination with a Starline Ioniser. Use: daily dose of 40–60 grams per 10 m3 pool volume. Shock dosage: 140 grams per 10 m3 pool volume

For the correct dosage, refer to the product packaging. The dosing of chemicals must be carried out with care. It is better to apply multiple doses than to add too much in one go.

NOTE: never dose chlorine and acid (pH-) at the same time due to the risk of chlorine gas formation.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

Adding the chemicals and heating the swimming water disrupts the lime / carbonic acid balance. One effective means of keeping this proportion in order is sodium hydrogen carbonate.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

This agent is used to combat algae in swimming water. For algae that is already forming (greenish water) first apply a “shock treatment” using Starline Calcium granulate or Starline chlorine shock. Use: dose uniformly over the surface of the water. DO NOTUSE in combination with Superzuurstof.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

Metal Magic crystallises metals and lime present in the pool water, which are then collected by the filter and removed at backwashing. Perfect for combating lime and metal deposition on foil and tiled pools. Use: ca. 3–4 dl. per 10 m3 pool volume.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

Removes oil, lime residues, organic particles and dirt from sand, cartridge diatom filters. Use: ca. 0.2 ltr. per rinse.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).

This descaler removes lime deposition on slatted covers and other surfaces (pool sides and bottom). Descaling may be done while the pool is in use. The lime is crystallised and collected in the filter. The lime crystals are then removed at backwashing. During backwashing, use filter cleaner to ensure the filter bed is completely free of lime.

If you require further information, then contact your Starline Dealer for this (find your closest dealer on our website).