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Slow chlorine tablets 5kg CTX-370
  • Slow chlorine tablets 5kg CTX-370
  • Slow chlorine tablets 5kg CTX-370

Slow chlorine tablets 5kg CTX-370

  • Slow dissolving 250 g trichlorine tablet with 90% useful chlorine.
  • Ideal for use in dispensers, being efficient, safe and economical.
  • Innovative square packaging!
  • Container of 5 kg

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verified reviews(2)

Anonymous customer published the 18/05/2022 following an order made on 02/05/2022



Anonymous customer published the 30/05/2020 following an order made on 11/05/2020


Ahorras dinero seguro, disolución lenta, duran más las pastillas, más cantidad de cloro, son perfectas estas pastillas, con dos pasas la semana y se mantiene el agua limpia.


Trichlor for swimming pools 

Trichlor tablets or slow dissolving chlorine tablets contain 90% of the useful chlorine so they allow a continuous chlorination avoiding the loss of chlorine due to the effects of the sun. This allows a slower dosage and therefore greater effectiveness over longer periods.

We distinguish three types of chlorine for pool maintenance:

  • Fast granulated chlorine or dichlorine: perfect for shock treatments, for start-up for the swimming season or after a storm.
  • Slow dissolving chlorine or trichlor:

          - in tablets: ideal for weekly pool water maintenance. 
          - granular: ideal for daily pool water maintenance 

  • Multi-action chlorine: composed of other components such as flocculant, anti-algae...

IMPORTANT: This product should not come into direct contact with pools made of liner, polyester or vinyl, or painted, as it may cause discoloration. 

Chlorine tablets dosage

Chlorine tablets are used for weekly maintenance of pool water. For a correct maintenance follow the next steps:

Initial treatment

  1. Check the pH level at 7.2 - 7.6 ppm.
  2. Add 10 gr. of granulated dichlorine per m³ of water.
  3. Leave the equipment in filtration
  4. After 2 hours, adjust with pH regulators.
  5. Follow the maintenance treatment

Maintenance treatment

  1. Check pH level at 7.2 - 7.6 ppm.
  2. Insert 2 tablets of 200 gr in the skimmer/floating dispenser per 50 m³ every 7 days.
  3. Leave the filtration equipment running

IMPORTANT: The initial treatment or shock treatment should be repeated whenever there is a lack of transparency in the pool water.

NOTE: add the product preferably at dusk and without the presence of bathers.

Optimal pool chlorine level 

In order to estimate the right amount of chlorine to add to the pool, it is important to check the pH and chlorine levels. It is therefore important to test with an analyzer kit at least 2-3 times a week and to regulate the parameters. 

It is important to distinguish between free chlorine, residual chlorine and total chlorine.

  • Free chlorine: chlorine with disinfection power. Optimal level 1-3 ppm
  • Residual chlorine: chlorine without disinfection power. Optimal level of 0.5 - 2 ppm.
  • Total chlorine: combines free and residual chlorine. Optimum level of 0.5 - 1.5 ppm.

Less than optimum chlorine will cause bacterial and algae growth resulting in unhygienic and unpleasant conditions. Dosages may vary depending on the number of bathers, sunlight, water temperature or weather conditions. 

Data sheet
Liner / Polyester
Water treatment with
Package size
5 Kg/L
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