TREATMENTS
CHOOSE EFFECTIVENESS
Your pool is a pleasure, which should not become a source of concern.
In order to maintain balanced water and prevent the growth of algae or bacteria, it is essential to treat your pool with an effective and environmentally-friendly product.
There are enormous differences between the treatment products available on the market in terms of both composition and manufacture.
The consequences as regards their effectiveness is visible on a daily basis, in your pool and your wallet.
OPT FOR QUALITY
With more than 15 years’ expertise in the swimming pool sector,
Mel’connect recommends that you use effective and environmentally-friendly products, made in France.
Follow the Mel'connect recommendations 
from your pool specialist.
OPTIMISED FEATURES AND FORMULATIONS
- 92% active ingredients for optimum effectiveness and minimum consumption
- Low stabiliser content to minimise water renewal
- Compression of 250 kg/cm3 allowing tablets to dissolve more slowly
- pH formulations that comply with standard EN 899 (drinking water quality)
- Non-foaming anti-algae products
- No oxidisers in the products, for increased safety in the event of a fire
- MORE TECHNICAL PRODUCTS
- MORE EFFECTIVE TREATMENTS
- A CONTROLLED MAINTENANCE BUDGET !
ENSURE YOUR WATER IS DISINFECTED AND DISINFECTANT
To benefit from perfect water all summer long, it is important to monitor your pool:
- Balance your water at the start of the season by addressing the pH, TAC (alkalinity) and TH (calcium hardness). If these 3 parameters are well-balanced, your water will be clear and your pH will be stable.
- Disinfect your pool regularly for clean and healthy water.
- Act quickly and effectively should algae appear.
- Clean your pool for a pool that is always attractive (water line, curtain, filter, cell, etc.).
- When autumn returns, winterise your pool.
When well-balanced, your water will be comfortable and healthy for swimmers
while preventing it being aggressive, corrosive
or scaling for your system.
WATER TREATMENT GUIDE
Aim
To obtain water that is perfect for comfortable swimming
When
Check the water’s pH, TAC and TH at the start of the season and then check the pH at least once a week
Treatment products
TAC, pH + and pH –
Aim
To have disinfected water every day
When
For the entire swimming season
Treatment products
Chlorine, salt and bromine
Aim
To remove bacteria and clean the water
When
In the event of green or cloudy water, slimy deposits (biofilm), algae, etc.
Treatment products
Shock chlorination, shock bromination, PCH
Aim
To obtain crystal-clear and healthy water
When
For the entire season, every 15 days on average
Treatment products
Anti-algae treatment jet 35
Aim
To retain the fine particles in the filter, to optimise filtration
When
For the entire swimming season, depending on the pool’s level of use
Treatment products
Liquid flocculant or in a cartridge like Flovil
A COMPLETE, HIGH-QUALITY RANGE
STABILISED CHLORINE
Stabilised chlorine is the most commonly used disinfectant in pools. It is available in a number of forms:
- Slow-release chlorine, in the form of 250 or 500 gram slow dissolving tablets, used as a maintenance treatment over a number of days
- Shock chlorine in 20 gram tablets, for rapid dissolving, very easy to dose
- Rapid chlorine in granules, for rapid dissolving, preferred for shock chlorination and injection using a dosing pump
Caution: stabilised chlorine releases stabiliser, which enables its destruction by UV rays, heat and significant water circulation to be limited. By contrast, this stabiliser does not disappear and builds up in the water over the course of treatments. When its concentration exceeds 75 mg/l, the action of chlorine is slowed and then entirely prevented. Beyond 100 mg/l, the pool requires partial drainage.
Caution: certain chlorine products only contain 70% active chlorine and are compressed to 150 kg/cm3, which clearly reduces the tablet’s usable life (just 3 to 5 days).
The products recommended by Mel’connect contain 92% active chlorine and are compressed to 250 kg/cm3 for lower consumption and a usable life that can be up to 8 days.
UNSTABILISED CHLORINE
PCH is THE leading brand for unstabilised chlorine.
It is popular with pool specialists for its consistent chlorine concentration and low insoluble matter content. With a very high chlorine content and no stabiliser, PCH is indispensable in the treatment of pool water:
- PCH Longue Durée, for daily treatment
- PCH Granulé, for start-ups and remedying green and cloudy water
The use of unstabilised chlorine is recommended as an alternative or addition to stabilised chlorination to control the excessive input of stabiliser.
PCH Granulé comply with standard EN 900 and EN 15 796 : the product is permitted for disinfection and potabilisation treatment of water intended for human consumption.
Caution: certain unstabilised chlorine products contain far more calcium, resulting in additional short-term scaling and, therefore, more rapid degradation of your system.
The products recommended by Mel’connect are compatible with all types of filter, are formulated to protect your system and limit scaling and are compliant with European standard EN 900, which applies to use for water potabilisation.
PH MINUS and PH PLUS
pH is measured on a graduated scale from 0 to 14. It expresses the concentration of free H+ ions.
In a pool, it is preferable to keep the pH between 7.2 and 7.4 for:
- The comfort of swimmers with water that does not irritate the skin or eyes
- Effective disinfection.
pH is corrected with the aid of :
- pH MINUS (to reduce the pH)
- and pH PLUS (to increase the pH).
Caution: certain pH products have weak concentrations and require a larger quantity for treatment.
The products recommended by Mel’connect are less aggressive, more concentrated and comply with standard EN 899 for the quality of drinking water.
ANTI-ALGAE TREATMENT
Certain conditions encourage the growth of algae in the pool: presence of phosphate, nitrogen, minerals, temperatures above 15°C, high pH, etc.
In this case, it is essential to get rid of algae:
- Shock disinfection to kill them (active chlorine or oxygen), followed by flocculation.
- Use of an anti-algae product, to slow their growth and facilitate their destruction.
Caution: certain anti-algae products are not compatible with all disinfectants, they can foam and significantly reduce the action of chlorine or bromine.
The products recommended by Mel’connect are non-foaming, have a long-lasting action and are compatible with all types of disinfectants (chlorine, salt, bromine).
WINTERISING
Winterising your pool is a delicate process, which, if carried out properly, will ensure that you are able to quickly re-start your pool.
Winterising can be active or passive:
- Passive winterising: the pool is stopped completely. This solution is often considered the most practical, as you do not need to deal with your pool at all during the winter.
- Active winterising: operation of the pool is slowed down. This solution is popular because it is more attractive as the pool remains completely visible. It also enables the water quality to be preserved and prevents the pump seizing. However, it is essential to carefully monitor the pool throughout the winter and, more particularly, when there is frost or ice.
Here are some recommendations for passive winterising :
- Vacuum and lower the water level, clean the water line.
- Clean your filter by means of extended backwashing and thoroughly cleaning the filter medium.
- Treat your pool water to ensure it can withstand the growth of algae and mould, to combat incrustation with limescale and dissolved mineral deposits.
- Prevent freezing by installing
• winterising floats in a diagonal line on the surface of the pool
• gizmos screwed to the base of skimmers
• expansion plugs to block the discharge outlets - Safety will be increased by installing a winter cover.
GOOD FILTRATION MATTERS MOST
Filtration plays a key role in the balance of your water.
If your filtration is not optimal, in terms of both quality and quantity, disinfectant may not be adequately dispersed in the pool and its level will fall rapidly. Likewise, a lack of circulation, in the event of excessive heat, facilitates the growth of algae and bacteria.
Filtration time must be based on the temperature of the water in your pool and spread throughout the day.
As the growth of algae is the result of photosynthesis, it is important to filter during the day and to remember to descale your filter once a year to maintain its effectiveness.
Caution: a lack of filtration must be compensated for by the addition of chemicals.
WHAT DOES IT MEAN … ???
Do you want to know more? Let us explain the terms used by pool specialists !
It's all a question of dosage! 1 ppm = 1 mg/l or 1 gr/m3, or 100 gr/100 m3.
Part per million (ppm) is a term widely used in science.
It corresponds to the fraction that is 10-6, i.e. one millionth.
It is used to express a mass fraction or a volume fraction.
The pH is the hydrogen potential. The pH measures the acidity or basicity of a solution.
The hydrogen potential, noted pH, is a measure of the chemical activity of hydrons (also commonly called protons or hydrogen ions) in solution.
In private pools, the pH must be adjusted between 7.2 and 7.4 to benefit from an ideal active chlorine level and swimming comfort.
The pH measures the acidity or basicity of a solution.
- pH = 7, the solution is said to be neutral
- pH < 7, the solution is said to be acidic
- pH > 7, the solution is said to be basic
The TAC measures the content of bicarbonate and hydrogen carbonate minerals.
The TAC is the Full Alkalimetric Titer.
These minerals act as a "buffer" effect and allow the good stability of your pH.
The ideal TAC is between 150 and 250 ppm (150 and 250 mg/l).
The TH or " Hydrotimetric Title " measures the hardness of the water.
TH represents the concentration of calcium and magnesium in your pool water.
The lower the TH, the softer the water.
The higher the TH, the harder the water.
Free chlorine is all the available chlorine in the water.
In a stabilized pool, 2 and 4 mg/l of free chlorine are required.
Active chlorine is the truly effective chlorine.
Active chlorine is the really effective chlorine.
It dissolves impurities and destroys bacteria and viruses.
It allows to have a disinfected and disinfecting water.
The regulation requires that the rate of active chlorine is between 0.4 and 1.4 mg/l.
This rate of active chlorine depends on the pH value.