Fi-Clor Hardness Increaser For Swimming Pools

by Fi-Clor
  • Fi-Clor Swimming Pool Water Hardness Increaser
  • High Quality Swimming Pool Chemical
  • Fi Clor Swimming Pool Chemical
  • Fast acting calcium flakes
  • Ideal for correcting calcium hardness levels
  • Suited to pools suffering high levels of grout loss
  • Available in 4kg tubs

DELIVERY: Fi-Clor Hardness Increaser will be sent out on a next working day service but all standard deliveries will be within 5 working days

RETURNS: Fi-Clor hardness Increaser can be returned unused, in original packaging, suitable for resale, within 14 days from date of delivery.


Fi-Clor Hardness Increaser works to correct the hardness of your pool water using calcium flakes. Correct water hardness levels in your swimming pool will prevent the corrosion of the pool surface, equipment and fittings in soft water area swimming pools.

If your swimming pool is losing Grout from between the tiles it is most likely from lack of Calcium in the pool water. Using Fi-Clor Hardness Increaser should help resolve the issue.

Dosing Instructiosn for Fi-Clor Hardness Increaser:

Calculate you swimming pool volume, if in doubt use this link to our Swimming Pool Chemical Handbook to use the handy swimming pool volume calculator.

Take a reading of the Calcium Hardness in your pool water. For liner swimming pools if the level is below 175mg/l (ppm) and for Tiled swimming pools below 250mg/l (ppm) add Fi-Clor Calcium Hardness.

When the pool is empty of bathers and with the filtration running sprinkle the flakes, quantity as directed on the tub for your pool volume, over the pool water around the edge of the pool avoiding the ares near the skimmers. Do not dissolve first as this may generate excessive heat.  

After 24 hours check your readings again and if still below 175ppm for liner pools and 250ppm for Tiled pools repeat the proicess