Hot Tub Chemicals

Welcome to the Lay-Z-Spa Chemicals and Filters page, the place to buy everything you need to maintain your hot tub and keep the spa water clean and healthy.
Browse our range of replacement filter cartridges for you filter pump, hot tub chlorine and chemicals for keeping your water clean and clear, and other essentials to maintain your spa.
ClearWater Lay-Z-Spa Chemical Starter Kit

Contains chlorine, pH plus, pH minus, foam remover & dip test strips.
Only £29.99
ClearWater Dip Test Strips x25

Tests chlorine, pH and alkalinity levels
Easy & simple to use
Only £6.99
ClearWater Chlorine Granules 1kg

Eliminate bacteria and harmful organisms in your spa water
Only £9.99
ClearWater Chlorine Granules 5kg

Eliminate bacteria and harmful organisms in your spa water
Only £39.99
Bestway 5 Inch Floating Chemical Dispenser

Slowly release chlorine or bromine tablets
Only £3.99
ClearWater Mini Multifunctional Tablets

Slow release tablets for floater
Contains chlorine, algaecide & clarifier
Only £14.99
ClearWater pH Minus Decreaser 1.5kg

Decrease pH levels in your spa
Improve comfort & chlorine treatment
Only £8.99
ClearWater pH Plus Increaser 1kg

Increase pH level in your spa
Allows effective chlorine sanitation
Only £8.99
ClearWater Clarifier 1 Litre

Clean dull and cloudy water
Remove sediments
Only £8.99
ClearWater Algaecide 1 Litre

Eliminate algae growth
Remove green from spa water or liner
Only £8.99
ClearWater Foam Remover 1 Litre

Control and prevent foaming
on your spa water
Only £12.99
Clearwater Scale & Stain Remover

Removes stains & marks left by scale in harder water areas.
Only £14.99
4x 25 Clearwater Dip Test Strips Packs (100 Test Strips)

4 x 25 Pack Dip Test Strips
1 Test for Chlorine, pH & Alkalinity
Only £19.99
6 x Lay-Z-Spa Filter Cartridge Packs (12 New Style Filters)

New style filter replacements
6 x 2 pack of filters
Only £34.99
12 x Lay-Z-Spa Filter Cartridge Packs (24 New Style Filters)

New style filter replacements
12 x 2 pack of filters
Only £69.99
Lay-Z-Spa Silver Spa Starter Kit
Contains the essentials needed
to set up your spa
SAVE £5
Only £59.99
Lay-Z-Spa Gold Spa Starter Kit
Contains essentials needed to
set up & also maintain your spa
SAVE £15
Only £99.99
Lay-Z-Spa Platinum Spa Starter Kit
Chemicals + filters + insulation
to set up & maintain your spa
SAVE £30
Only £129.99
Lay-Z-Spa Ultimate Spa Starter Kit
Everything you need to
set up & maintain your spa in style
SAVE £65
Only £159.99
Lay-Z-Spa Filter Cartridges (2 Pack)

New style filter replacements
Fits all new models
Only £8.99
Filter Cartridge Cleaner

For the important job of cleaning your pump’s filter cartridges
Only £12.99
ClearWater Multifunctional Tablets (2 Pack) + 5

Slow release tablets
Includes 1kg Tablets + 1x Dispenser
Only £28.99
Lay-Z-Spa Chemical Top Up Kit

Replenish your Chemical Starter Kit
Includes PH Increaser
Only £24.99
Lay-Z-Spa Chemical Top Up Kit

Replenish your Chemical Starter Kit
Includes PH Decreaser
Only £27.99
Welcome to Clearwater Spa Chemicals & Accessories, the place to buy everything you need to keep your hot tub water clean and healthy. Whilst Clearwater Chemicals have been designed with Lay-Z-Spa hot tubs in mind, they are also suitable for other types of hot tub water treatment.

It is essential to keep your hot tub water hygienic by treating it with chemicals and regularly changing your filters, regardless of how long or how frequently you use your hot tub. Correct water treatment will ensure the safety of the hot tub bathers, reduce how often you have to replace the water and also prolong the lifespan of your pump.

For more detailed advice on water health and chemicals, our Chemical Guides section has plenty of useful information or you can visit the product pages below for more detail about each chemical or accessory.