CÔNG TY TNHH AQUASTAR THĂNG LONG - PHÂN PHỐI THIẾT BỊ BỂ BƠI, MÁY BƠM NƯỚC, LÒ SƯỞI

Filter GLV and GTV Series

Giá bán: Liên hệ
  • Injected filters, unaffected by pool chemicals
  • Complete range with top or side mounted valve
  • Includes: Vari-Flo™ 6-way valve, unions and pressure gauge
  • For pools up to 85 m³ Wide opening for easy maintenance

Frequently asked questions

Which type of pool filter should I choose ?

An essential component, pool filters contribute to cleanliness of the pool water by removing debris and impurities, used in combination with a disinfectant. There are several types of filter: sand, diatomaceous earth, cartridge or zeolite.

Which filter is most popular?

Sand filters are without doubt the most widely used amongst private pool owners. Their great advantage is the low running cost and initial outlay, and the ability to filter large quantities of water easily. However, the minimum filtration size leaves a little to be desired, with removal of debris 30 to 40 microns or larger.

Cartridge filters are also very common. As the name suggests, these use a filtration cartridge which can be easily washed and replaced. A method that considerably simplifies day-to-day upkeep and maintenance of the device. The minimum filtration size is also better, of the order of 15-20 microns.

Which filters perform the best?

Operating in the same way as sand filters, zeolite filters use a 100% natural component of volcanic origin, with an excellent minimum filtration size of the order of 5 to 10 microns. They are also able to maintain their operating quality in water of any pH value, and adapt to all types of water, even the hardest!

We finish the list with the ultimate filter on the market: diatomaceous earth filters. This high-end appliance has an exceptional filtration size of 1 to 3 microns. It removes all impurities, leaving crystal-clear water of unparalleled transparency. It is also considered more eco-friendly due to the use of algae for the water filtration, and is suitable for all sizes of pool, from the smallest to the very largest. However, it is sensitive to hard water and requires frequent maintenance.

Connected pools: what are the benefits?

In terms of water treatment, maintenance and user comfort, connected pools offer incomparable advantages thanks to remote management of their equipment.

What is a connected (or “smart”) pool?

Bringing the principle of home automation into the realm of swimming, smart pools consist of inter-connected equipment linked via a Wi-Fi connection. This means they can be managed remotely and certain actions can be scheduled in advance or automatised, thus eliminating the possibility of forgetting to treat the water.

This solution requires installation of a connected box next to the pool’s electricity cabinet, and of an app on your smartphone or touch-sensitive tablet that can be downloaded for free from the App Store or Google Play apps.

Depending on the model, you can visualise the pH, water temperature, filtration, water treatment, etc., in real time and manage them remotely.

What are the benefits of a connected pool?

There are multiple benefits to this innovative, high-tech solution! A connected pool saves you valuable time, given that its systems take charge of many tasks. You no longer need to move or travel to perform each operation since these can be activated remotely.

Thanks to the automatic maintenance, you can enjoy high-quality water with full peace of mind at all times. Pool analysis, water treatment dosage, water monitoring... these are all repetitive, fastidious tasks that you can automate. The connected system can even alert you to low stock of treatment products and tell you when you need to restock!

Lastly, you will see significant savings with a connected pool. No more unnecessary costs! Everything is calculated to a very high degree of precision in terms of water consumption, energy and maintenance products.

How can pool water be sanitized without chemicals ?

Regarding pool water treatment, several alternatives to chemicals are now available, which demonstrate good performance!

Have you heard of salt chlorinators?

If you don’t want to disinfect your pool water using so-called “chemical” chlorine, why not do it with natural chlorine? A salt chlorinator is a device that will transform salt, placed in the pool in advance of the process, into 100% natural chlorine! This type of device, which simply connects to your filtration circuit (after the filter), has excellent oxidising, disinfecting, antifungal and antibacterial capabilities.

Another indisputable advantage: this natural chlorine is not discharged into the environment, since under the effect of the sun’s rays it is again transformed into salt, after a while. And it can then be re-used again and again in the next treatment cycles...

Ionisers for copper/silver electrolysis are another option. Here the concept is a little different, because silver and copper ions are used in water.

Which other non-chemical treatment are available?

Some other options available for pool water treatment are:

Treatment with UV rays, using a special lamp emitting these rays, which will get rid of bacteria in a natural process,
Ozone treatment, which uses an ozone generator to emit this gas and kill viruses, germs, and eliminate other dirt polluting the pool water,
Active oxygen treatment, that you place in the pool yourself in the form of tablets, powder or granules to destroy organic matter.

Good to know: some of these treatments will not completely eliminate bacteria from the water, and must be combined with classic disinfectants. Consequently, it will not always be possible to completely avoid chemicals, but you can at least drastically reduce the quantities used.

What is the best water treatment for a pool?

Treatment using chlorine, or bromine, or by salt chlorination... there are many solutions for disinfecting your pool water. Which one should you choose?

Should you opt for chlorine or bromine treatment?

Chlorine or bromine treatments are some of the most popular techniques. They are highly effective and are able to eliminate bacteria, viruses, fungi and all other organic materials in suspension in the pool water.

These powerful oxidants come in the form of pellets to be placed in skimmers, or tablets to be placed in a dedicated device (brominator) installed within the water filtration system. Easy to use and affordable: chlorine is the cheapest treatment on the market, whereas bromine is 20% to 30% more expensive.

However, in addition to its strong smell, the downsides of chlorine are its tendency to cause skin problems, and the fact it only works when the pool pH is neutral. Contrary to this, bromine still performs effectively in a pool with a high pH and has no irritating effects or recognisable odour.

Have you heard of salt chlorination?

Considered to be better for health and more natural, this treatment method uses salt, which is injected into the pool before being transformed into natural chlorine by salt chlorination. This process will give it the same disinfecting and cleaning powers as chemical chlorine.

The major difference is that this natural chlorine does not smell, and does not trigger allergies. In addition, under the effect of UV rays, this chlorine spontaneously transforms back into salt, thereby allowing the treatment cycle to restart multiple times.

Even though the initial investment is high due to the purchase of the salt chlorinator, the annual cost of operation of this solution is negligible given that salt is a highly affordable raw material. Especially since it is recycled, as we have already mentioned!

What advice can you give to simplify sanitization of my pool?

Select a more automated system!

For example, you can choose a simple chlorinator, a salt chlorinator or a liquid chlorine injection system.

I have been advised to check the total alkalinity in my pool. What is this and what do I need to do?

The total alkalinity, which can be checked using test strips, is an illustration of the mineral content of your water.

If it is too low or too high, it prevents pH equilibrium of the water from being correctly maintained. Due to winter rains, the mineral content of your water is low.

To raise the total alkalinity to the right level, simply add alkalinity increaser to your pool.

How do I winterise my pool heat pump?

  1. You simply need to isolate it using the valves designed for this purpose, and unscrew the hydraulic connections.
  2. On some heat pumps, you will need to remove the drainage plug on the lowest point of the PVC/titanium condenser.
  3. You can use a blower to evacuate the rest of the water from the condenser, or use a cloth to absorb this remaining water.
  4. Warning: incorrect winterising can result in breakage of the condenser.
  5. You can also disconnect it from the electricity network using the circuit-breaker.
  6. All you have to do now is cover it with a special winter cover.

How do I take the sand out of my filter ?

Close the valves and remove the cover.

If you have a vacuum cleaner, vacuum both the water and the sand from the filter. If not, drain and remove the sand by hand.

Which pool pump should I choose?

The purpose of your pool pump is to draw pool water through the skimmers and pool main drain to channel it towards the filtration system, which will then eliminate most of the impurities. What are the criteria for choosing a pool pump?

How do I determine the correct pump flow rate?

The most important aspect in choosing a pump is the same as for filters: a suitable filtration rate for your pool. This figure is easily calculated by dividing the pool volume by 4, a convention derived from the need to completely filter the pool water every 4 hours. Thus, you will obtain the flow rate in cubic metres/hour (m3/h).

This number corresponds to the flow rate required for correct cleaning of your pool water, under normal conditions of use. It is important to choose a pump with an equivalent, or slightly higher, flow rate (1.2 or 1.5 times higher) if you need to take into account the head losses related to the distance between the pump and the pool, or to piping that follows a sinuous, complicated path.

A higher flow rate is also required if there is abundant vegetation at the edge of the pool, which may create more debris.

What other factors should be taken into account when choosing a pump?

Amongst the important factors that will influence your decision, we have for example:

  • Whether or not the pump has a strainer, which will trap the largest debris so the filter can concentrate on smaller impurities;
  • Energy consumption, because pumps vary significantly in performance, and electricity bills can quickly ramp up due to an ineffective pump;
  • The sound volume emitted by the pump, given in decibels by the manufacturer, is also a factor if you have installed the plant room right next to the pool, or directly below a window of the house.


Why choose a variable-speed pump?

  • Silent running: variable-speed pumps are particularly quiet when running at low speed.
  • Reduced speed: the advantages of using a variable-speed pump are based on the fact that they can be run longer at low speed, while consuming less energy.
  • Energy savings: Hayward Variable Speed Pumps are equipped with Permanent Magnet motors with a smart inverter that provides electricity savings up to 85%*, at low speed.
    *Electricity savings of 65% are generally achieved.
  • Water quality: variable-speed pumps optimise sand filtration quality. The quality of pool water is 80% dependent on the quality of its filtration. Using a variable-speed pump will significantly increase this filtration quality, thanks to the water passing more slowly through the granular filtring media.
  • Flexibility: benefit from a wide range of pump speeds to customise your needs according to your pool equipment.

I need to change my pump, is it a good idea to get a more powerful one ?

No. This would risk reducing filtration quality, because the water would pass too quickly through the filter: a pump is always sized to work with a filter.

On the other hand, you can take the opportunity to swap for a variable speed pump which circulates water permanently at low speeds. Result: it is super silent and electricity consumption is reduced by up to 85%*

My pool water is turning green: what should I do?

First, check your stabilizer level. If it is too high, the disinfectant will not work.

It is also possible that your filtration time is too short to treat your water sufficiently. In this case, lengthen it.

If the problem persists, it is recommended that you have a complete analysis of your water by a pool professional to see if it is well balanced and does not contain too many nitrates or phosphates.

SEASONAL MAINTENANCE

When my pool is in a state of active winterizing, should I switch off my salt chlorinator ?

It is not recommended to operate the salt chlorinator in water that is too cold (below 15°C).

When the temperature decreases, development of algae and micro-organisms slows down: consequently, occasional chlorine dosing is sufficient during winterizing.

My pool water is turning green: what should I do?

First, check your stabilizer level. If it is too high, the disinfectant will not work.

It is also possible that your filtration time is too short to treat your water sufficiently. In this case, lengthen it.

If the problem persists, it is recommended that you have a complete analysis of your water by a pool professional to see if it is well balanced and does not contain too many nitrates or phosphates.

It's spring ! Can I use my pool cleaner to clean my pool for the first time this season ?

Absolutely not. Your robotic cleaner is designed for regular maintenance of your pool. Spring cleaning using a cleaner would risk clogging it up excessively. So it is best to clean manually the first time.

What should I do to make sure my passive winterizing goes well?

First of all, lower the water level of the pool by 1/3, think of installing wintering floats in the pool and skimmers.

Think of draining the different equipments of the pool: pump, filter, heat pump, electrolyzer. Add winterization product to stabilize the water, and finally, cover the pool.

If in doubt, do not hesitate to call a professional.

FILTERS - GENERAL QUESTIONS

I have re-opened my pool but my pressure gauge indicates a high pressure of 3 bars. What should I do ?

Pressure gauges are quite fragile and they are damaged by freezing conditions.

For this reason, yours may need to be replaced because a pressure of 3 bars appears improbable.

How do I take the sand out of my filter ?

Close the valves and remove the cover.

If you have a vacuum cleaner, vacuum both the water and the sand from the filter. If not, drain and remove the sand by hand.

I see water seeping out of the used water outlet of my valve when it is in the filtration position. What should I do ?

Your star seal must be damaged. It must be replaced.

To ensure longevity, operate the valve only when the pump is off.

How do I choose the right sand filter for my pool?

Having decided to get a sand filter to purify your pool water, how can you make the right choice amongst the available models? Here is all the information you need to make the right choice of dimensions and model for your appliance.

How do I choose the right dimensions for a sand filter?

For optimal efficiency, your sand filter must be dimensioned correctly, on the basis of the volume of water to be treated and therefore the flow rate. As a reminder: water in the pool must be completely filtered on average every four hours, as is conventional in the sector.

Take the volume of the pool in cubic metres (this number was provided to you at the time of installation), then divide it by 4 and you will obtain a flow rate in m3/h!

If the surroundings create certain issues, such as dense vegetation close to the pool, or an obligation to install the plant room far from the pool, multiply this number by 1.2 or 1.5 to take into account the corresponding head losses.

N.B.: use this flow rate to select the right filter, and the right pump to channel the water towards the filter! For both devices to work in harmony, the pump flow rate must be equivalent to or slightly higher than the filter flow rate.

What other criteria should be taken into account when choosing a sand filter?

Other factors will play a part in your choice of sand filter:

  • The format is important, because certain designs can be fitted into awkward plant rooms, taking up less ground space;
  • The materials used in the design (fibreglass or polyester for example), which don’t always have the same resilience or the same lifespan;
  • The possibility of replacing the sand with a medium offering better performance, such as sand or zeolite, which achieve finer filtration.
  •  

Which type of pool filter should I choose ?

An essential component, pool filters contribute to cleanliness of the pool water by removing debris and impurities, used in combination with a disinfectant. There are several types of filter: sand, diatomaceous earth, cartridge or zeolite.

Which filter is most popular?

Sand filters are without doubt the most widely used amongst private pool owners. Their great advantage is the low running cost and initial outlay, and the ability to filter large quantities of water easily. However, the minimum filtration size leaves a little to be desired, with removal of debris 30 to 40 microns or larger.

Cartridge filters are also very common. As the name suggests, these use a filtration cartridge which can be easily washed and replaced. A method that considerably simplifies day-to-day upkeep and maintenance of the device. The minimum filtration size is also better, of the order of 15-20 microns.

Which filters perform the best?

Operating in the same way as sand filters, zeolite filters use a 100% natural component of volcanic origin, with an excellent minimum filtration size of the order of 5 to 10 microns. They are also able to maintain their operating quality in water of any pH value, and adapt to all types of water, even the hardest!

We finish the list with the ultimate filter on the market: diatomaceous earth filters. This high-end appliance has an exceptional filtration size of 1 to 3 microns. It removes all impurities, leaving crystal-clear water of unparalleled transparency. It is also considered more eco-friendly due to the use of algae for the water filtration, and is suitable for all sizes of pool, from the smallest to the very largest. However, it is sensitive to hard water and requires frequent maintenance.

Documentation

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