Pool Chemicals | Chlorine, pH, and Treatment

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Chlorinated products for swimming pools

pH regulators for swimming pools

Algaecide for swimming pools

Pool flocculants

Pool clarifiers

Pool bromine tablets

Pool descalers and cleaners

Pool heaters

Spa and Sauna Products

Oxígeno activo en pastillas Quimicamp 20 g formato 5 kg para piscinas tratamiento sin cloro

Pool oxygen

Preguntas frecuentes sobre Pool chemicals

What are the basic pool chemicals for maintenance?

Essential treatment requires four indispensable compounds to keep the water sanitary throughout the season:

pH regulator: adjusts the acidity to the ideal range of 7.2 to 7.6 to prevent eye irritation and biocide ineffectiveness.
Continuous disinfectant: trichlor or bromine tablets to eliminate bacteria and pathogens in the water.
Preventive algaecide: a specially formulated compound that inhibits the growth of green and black algae.
Flocculant or clarifier: clumps microscopic particles in suspension so the sand filter can easily trap them.

Maintaining these four elements with controlled dosages prevents cloudiness and avoids the need for aggressive shock treatments.

I have a private 50 m³ pool, and the water gets cloudy quickly. Which tablet disinfectant should I buy?

Multi-action tablets based on trichloroisocyanuric acid are the most efficient option for medium-sized residential pools. The gradual dissolution of complete formulations such as Quimiclor PS 5 Effects Quimicamp 5 kg – 250 g Tablets (Multi-Action Chlorine) steadily releases active disinfectant, algaecide, and clarifier directly from the skimmer.

For 50 cubic meters, simply add two 250 g tablets every seven days, checking weekly that the free chlorine remains between 0.5 and 1.5 ppm. This format prevents UV degradation and simplifies routine maintenance without the risk of sudden overdosing.

What is the difference between shock chlorine and slow-dissolving chlorine?

The main difference lies in each chemical product’s dissolution rate and molecular composition. Shock chlorine, typically granular dichlor at 55% or 60% strength, dissolves in minutes and instantly provides a high concentration of free chlorine. It is used when opening the pool, after severe storms, or when the water is visibly green.

Slow-dissolving chlorine, on the other hand, is made of trichloroisocyanuric acid pressed into high-density tablets that take between 6 and 10 days to dissolve completely. Its purpose is to maintain continuous bacteriostatic protection against the oxidative wear caused by bathers.

I’ve installed a salt chlorinator and stains have appeared on the liner. What algaecide should I add without damaging the cell?

Salt electrolysis systems require algaecides that are free of copper ions to avoid damaging the titanium electrodes or staining synthetic linings. Adding traditional formulations containing copper sulfate often causes irreversible buildup on the chlorinator plates and discolors the PVC.

Applying specific products such as Algiklean 1.1 kg, special algaecide for salt water electrolysis. neutralizes the most resistant strains of black and mustard algae without interfering with the water’s electrical conductivity. Dose one liter per 100 m³ during setup and repeat the dose in smaller amounts each month to keep the pool spotless.

How do you adjust the pH before applying pool chemicals?

The pH should be adjusted by first measuring the levels with test strips, DPD reagents, or reliable digital photometers. If the value is above 7.6, add liquid or granular pH reducer around the perimeter with the pump running; if it falls below 7.2, add pH increaser.

To adjust by 0.2 units in a volume of 50 m³, approximately 500 grams of granular increaser, well dissolved in water, are required. Maintaining this chemical parameter before applying disinfectants prevents mineral cloudiness and ensures that the chlorine works at its maximum germicidal strength.

My pool water is whitish, but the chlorine and pH are within range. What product should I use to clarify it quickly?

A fast-acting clarifier solves mineral cloudiness by clumping microscopic particles into flocs that settle to the bottom or are trapped by the filter bed. High-concentration treatments such as ULTRA CLEAR Super Clarifier, 1 L. PM-643. Piscimar. restore water clarity in less than 24 hours without clogging cartridges or silica sand.

Pour 200 to 400 ml per 50 m³ directly into the skimmers while the recirculation system is running for two hours, then switch off the motor for the whole night. At dawn, vacuum the sediment deposited on the floor to the drain for a lasting crystal-clear finish.

I’m closing the pool for the cold months. How should I apply the winterizing products?

Winterizing treatment requires first cleaning the walls, backwashing the filter, and dosing a concentrated liquid winterizer when the water is below 15 °C. The technical protocol consists of the following steps:

Adjust the pH to between 7.2 and 7.4 and perform a preventive shock chlorination to disinfect the residual bacterial bed.
Dose the winterizing product at a rate of 5 liters per 100 m³, allowing it to recirculate for a full 4 hours.
Repeat half the preventive dose halfway through the winter season, specifically between January and February.
Cover the water surface with an opaque cover to prevent photosynthesis and uncontrolled microorganism growth.

This chemical preservation treatment protects the walls from limescale deposits and saves the full cost of draining and refilling the water in spring.