Swimming Pool and Hot Tub Chemicals

HTH Swimming Pool Chemicals available for fast next working day delivery. We are official dealers for HTH Swimming Pool and Hot Tub Chemicals. We are also official dealers for Relax Pool and Spa Chemicals. Our range of pool and spa chemicals can be bought online for next day delivery. HTH and Relax are our main brands. We stock an extensive range of hot tub chemicals, swimming pool chemicals,  salt chlorinators and UV Systems. Our helpline 01322554870 is open out of work hours, so we are always here to help you if you have any questions

Fi-Clor Alkalinity Increaser

Fi-Clor Alkalinity Increaser

by World Of Pools.com
  • Fi-Clor Total Alkalinity in your swimming pool use TA or Total Alkalinity Plus whilst the swimming pool pump is running.
  • To REDUCE Total Alkalinity in your swimming pool use pH Minus when the filtration pump is turned off.

DELIVERY: We aim to send all products out on a next working day service but all standard deliveries will be within 5 working days

RETURNS: All products can be returned in original packaging, suitable for resale, within 14 days from date of delivery.


Fi-Clor Alkalinity Increaser. Swimming Pool water needs to be maintained at a Total Alkalinity of between 80 - 140ppm,this figure can easily tested using Aquachek Test Strips.

Keeping your Swimming Pool Total Alkalinity within these limits will prevent damage to your swimming equipment and ensure that the Chlorine in your swimming pool is working effectively, whilst working as a buffer for the pH level