ONYX Krystal filter cleaner is specially formulated to provide a deep clean of filter media, particularly sand filters
Over time, limescale and mineral residue build up in the sand, reducing water flow and filtration efficiency. This product works directly by breaking down limescale deposits, allowing the filter to regain its optimal filtration capacity
Its powerful descaling agent helps extend the life of the filter sand, improve water quality, and reduce excessive pressure in the system
The 1-liter size is ideal for periodic maintenance of above-ground and in-ground pools
Key benefits
✔️ Ultra-powerful filter cleaner
✔️ Breaks down limescale deposits in the sand
✔️ Restores filtration efficiency
✔️ Extends the life of filter sand
✔️ Reduces excessive filter pressure
✔️ Easy to use during maintenance
Technical specifications
Brand ONYX
Product Krystal Filter
Size 1 liter
Type Descaling cleaner
Function Filter cleaning and descaling
Application Pool filter, primarily sand filters
Why clean the filter sand
Limescale deposits clog the sand and reduce filtration
A clogged filter increases pressure, reduces water clarity, and strains the pump
Regular cleaning helps maintain clear water and an efficient system
Directions for use
Pour the recommended amount of ONYX Krystal Filter directly into the filter according to the manufacturer's instructions
Allow the product to work and dissolve the limescale deposits
Perform a complete backwash
Rinse before putting the filter back into service
Recommended applications
Sand filter maintenance
Reducing high filter pressure
Restoring filtration performance
Seasonal pool maintenance
Usage tips
Always follow the manufacturer's specific instructions
Do not use when bathers are present
Rinse the filter thoroughly after treatment
Store in a cool, dry place out of reach of children