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pH- (powder) - 5kg

Regular price 19.95 EUR
Sale price 19.95 EUR Regular price
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Why use pH-

The pH- reduces the basicity of your swimming pool water. A good pH level helps to decrease corrosion, optimizes the effectiveness of disinfection products, and makes the water less aggressive for the skin and the eyes.

iopool pH- is the perfect product to maintain your pool and hot tub water to the optimal levels for crystal clear water. This product is designed to be easy to use and quick to react, allowing for quick and easy pH adjustments. The iopool pH- is reliable and safe.

Use it with app

You can free download our application on Apple Store (IOS) or Play Store (Android). Then you can follow advice from our recommendation engine to know when and how you can use our chemicals products.

Main advantages

  • High pH- concentration;
  • High pH- grade quality;
  • Ease of dissolution;
  • Speed of action;
  • Treatment efficiency;
  • A small amount of dust.
  • Compatible with all treatments.
  • Compatible with all filtration systems.

How it works

The pH indicates a concentration of hydrogen ions. High pH is poor in hydrogen ions. By being released into the water of your swimming pool, the pH + of iopool increase the concentration of hydrogen ions and decreases the basicity of your pH.


Related blog articles

Find helpful tips, tricks, and information about pH on our blog.

Usage advice

  • Activate the filtration of your swimming pool;
  • Dilute the pH- in a bucket of water;
  • Disperse the mixture of water and pH- in your swimming pool.


  • Stabilize your pH before any disinfection treatment (chlorine and active oxygen);
  • pH modifiers are corrosive products that must be handled with precaution and do not spill on natural stones, clothing, and bare skin;
  • In case of very acidic water, correct it over several days.

Please note that the above photo is non-contractual.

Customer Reviews

Based on 69 reviews
Frédéric Lapierre

Produit de qualité. Je recommande.

François Boivin
Bon produit

Juste une remarque, l’inscription PH- est écrite en petit contrairement à mes produits précédents. Il faut vraiment chercher l’indication du produit. Sinon 👍

Mathieu RAFFIN


georges dos santos

pH- (powder) - 5kg

Florent Agniel
Produit efficace

Produit efficace et qui se dissous rapidement dans l'eau lors de l'application

Chantal Leger
Sabotage par transporteur…

La poudre fuyait par un coté du colis j’ai refusé toute ma commande qui vous a été retournée

Bon produit, mais....

le produit est efficace, la correction est rapide mais lors de mes deux dernières commande les seaux sont arrivés exploser j'ai donc refusé les colis, je retente une 3 commande en espérant qu'il arrive en un seul morceaux et pas en plusieurs .