isinfection, Chemical Balance Regulators, Flocculants, Coagulants, Algicide, Invernaje, Auxiliary Products, Cleaning Products, Chemicals for Spas, Essences for Spas and Saunas, Filtering Products. Sale of Chemicals, Spare Parts and Accessories of all kinds and Cleaning Material of the pool, Car Cleaning, Pickle, Pole.
To obtain and maintain a clean, transparent and healthy water in our pool requires the use of chemical products prepared for this purpose. Basically there are 4 types: chlorine, bromine, active oxygen and salt (in the latter case, only in pools that work with salt electrolyser).
Disinfection of water. Disinfection is a process in which the germs that infect or that can cause an infection are eliminated from a body or place.
How do chemicals work in the water?
Chlorine is a gas that is in the form of Cl2. By mixing chlorine with water, it reacts to form hydrochloric acid and hypochlorous acid. The latter has the disinfectant character. What it basically does is eliminate by oxidation the bacteria and other organic matter existing in the water.
It must be taken into account that hypochlorous acid, in contact with nitrogenous compounds (urine, sweat, etc.) originates chloroamines. Chloroamines do not have a disinfectant character, so chlorine that is in this form will not be performing its function.
Types of chlorine
In the market we can find chlorine in several ways:
Liquid chlorine or sodium hypochlorite (bleach): It is the cheapest but also the most unstable so it can not be stored in quantity and tends to lose its effect due to weather conditions. It is ideal to be applied with dosing pumps.
Dichloro: Dichloro known as Rapid or Shock Chlorine is about stabilized chlorine (to avoid loss of efficacy) that has about 60% available chlorine. It is a highly soluble compound which makes it ideal to be applied directly in the pool and is very fast effective. It also has an almost neutral pH, which means that it does not affect the pH of the pool water.
Trichloro: Also known as slow chlorine due to its slow dissolution. Like dichloro, it is also stabilized chlorine (to avoid loss of efficacy). It is the most concentrated with 90% chlorine available.
Within the Trichlor is the variety known as multi-action chlorine, which combines the action of disinfectant with that of antialgas and flocculant.
In the case of dichlor and trichlor, both are stabilized by cyanuric acid (also called isocyanuric acid). This is a chlorine stabilizer that increases its permanence against solar radiation, but which accumulates in the water, decreasing the disinfectant capacity of chlorine. Therefore, it is very important to control the concentration of isocyanuric acid at all times, since at high concentrations it can be counterproductive.
Bromine is a liquid that is in the form of Br2. It is more effective than chlorine, but its price is higher. In contact with water produces hypobromous acid, which is the disinfectant of this product. Hypobromous acid, in contact with nitrogen compounds (urine, sweat, etc.), produces bromoamines. These have a difference with chloramines and it is that they are good disinfectants, so the disinfecting capacity of bromine is higher. Besides, it does not produce the odors of chlorinated products.
For this reason and for its qualities, it is ideal for small pools, with frequent use, with water at a temperature higher than 28-30º and for hot tubs and spas.
The use of chlorine and bromine is indistinct (but can not be mixed).
Liquid oxygen is also known as hydrogen peroxide (H2O2) or hydrogen peroxide, since it is water enriched with oxygen. It is a chemical substance that oxidizes organic contamination without producing any of the combined irritant chlorine products.
It has an immediate effect, so it will be very useful if we want an efficiency at the moment but on the other hand it is very volatile so it will be necessary a greater and constant maintenance.
Salt for swimming pools
Salt (NaCl) is used for pools equipped with salt electrolyzer. Saline chlorination is a process in which salt (NaCl) is added to the pool water and chlorine is separated from sodium by the necessary instrumentation. Chlorine disinfects the water and reconnects with the sodium, repeating the cycle. It is a closed cycle so we should not replace the salt periodically. It will only be done in cases where there has been a loss of water in order to get back the right concentration of salt.
If necessary, salt chlorination is perfectly compatible with any other pool water disinfection system on the market. As well as with chemical products such as flocculants, algaecides or isocyanuric acid.
It is very important to choose the quality of the salt well: it must be pure salt, made especially for this function. Sea salt is contraindicated.
Calcium hypochlorite also called “chlorinated lime” is a chemical compound whose formula is Ca (ClO) 2. It is widely used in water treatment due to its high efficacy against bacteria, algae, mold, fungi and microorganisms dangerous to human health. When the calcium hypochlorite reacts with water, hypochlorous acid (disinfectant) and calcium hydroxide are formed. Calcium hydroxide tends to increase the PH, so it should be controlled.
PH Incrementor and PH Minorator. To keep the water chemically balanced.
If the PH of the water is outside the recommended limits, the disinfectants stop acting, for a large amount that is added to the water. Therefore, maintaining the PH within the correct area (7.2-7.6) is key to the correct maintenance of the pool.
Algae are plant micro-organisms that can develop and multiply rapidly in water, especially when it is warm.
To avoid the proliferation of algae it is convenient to periodically use an Antialgaes that, in addition, reinforces the action of the disinfectants, especially if adverse weather conditions (storms, excessive heat) are foreseen.
The Antialgaes shock will work when the algae are already in the process of formation and we need a quick action. This product can be replaced or combined with a quick water recovery product.
The flocculant coagulates (groups, like a magnet) most of the impurities present in the water causing them to precipitate to the bottom of the pool in the form of gelatinous flocs. To eliminate them definitely you have to pass the pool cleaner. The water will be transparent.