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

HTH 5kg Shock Chlorine

HTH 5kg Shock Chlorine

by HTH
  • HTH Shock Granules Shock & Sanitiser
  • Replaces Fi-clor Superfast Shock
  • Very High Chlorine Content 10% Stronger Than Standard Shock Chlorine
  • Available 5kg Bucket
  • Stabiliser Free, No Chlorine Lock
  • Convenient Alternative to Liquid Chlorine


DELIVERY: HTH Shock Chlorine Granules Delivery will normally take between 1-3 days, but please allow 5 working days in some extreme cases.

RETURNS: HTH Shock Chlorine Granules can be returned to us, in compliance with the Consumer Contracts Regulations, unused and in their original packaging, suitable for resale, within 14 days from date of delivery. Returns should always be sent via "Signed For" carrier or postal service.


When a return is received back into our warehouse our returns department confirm that everything is present and that the item is in its original condition, to make sure it is eligible for a refund. We will process the refund normally on the same day we take them in, but please allow up to a maximum of 14 working days for the money to reach your bank or credit card. It is unlikely to take this long but due to reasons such as bank delays or errors, this may occasionally occur.

PRODUCT INFO: HTH Shock Granules are a high strength chlorine shock treatment and is used as an alternative to liquid shock. HTH shock can also be used as a regular santitiser. We sell HTH Shock in 5kg containers. Superfast shock does not need to be pre dissolved so can be added direct to the pool water

Chlorine shock should be applied when you have properly balanced your pool water, this will make the shock treatment more effective killing bacteria and algae.  HTH Shock should be use don a regular weekly or fortnightly basis especially when the pool is regularly used and is an ideal product when your pool is left and becomes green with algae

Below is a basic guide to applying superfast shock but please refer to the container for full directions on use