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Clearwater CH0009 Water Clarifier for Hot tub Spa and Swimming Water Treatment for Pristine Crystal Clear Water, 1 Litre

Clearwater CH0009 Water Clarifier for Hot tub Spa and Swimming Water Treatment for Pristine Crystal Clear Water, 1 Litre

4.5
£21
AQUA PLUS Chlorine Granules for Water Treatment in Swimming Pool, Spas, Hot Tubs and Fountains, 5 KG

AQUA PLUS Chlorine Granules for Water Treatment in Swimming Pool, Spas, Hot Tubs and Fountains, 5 KG

3.8
£88
SpaChoiceSpa Chlorine Granules for Hot Tub

SpaChoiceSpa Chlorine Granules for Hot Tub

4.7
£55
20 x 20gram Chlorine Tablet Hot Tubs Swimming Pool Tablets

20 x 20gram Chlorine Tablet Hot Tubs Swimming Pool Tablets

4.5
£15
Doheny's Di-Chlor/Granular Chlorine - 10 lbs.

Doheny's Di-Chlor/Granular Chlorine - 10 lbs.

£296
Relax Spa/Hot Tub Chlorine Granules 500g

Relax Spa/Hot Tub Chlorine Granules 500g

4
£11
SDIC GRANULAR CHLORINE-5KG BUCKET

SDIC GRANULAR CHLORINE-5KG BUCKET

4.5
£86
Clorox Spa 50016CSP Antifoam, 16-Ounce

Clorox Spa 50016CSP Antifoam, 16-Ounce

4.7
£47
Pool chemical products Stabilised Chlorine Granules 10kg Swimming Pool Spa Hot Tub

Pool chemical products Stabilised Chlorine Granules 10kg Swimming Pool Spa Hot Tub

4.3
£282
In The Swim Chlorine Shock Granules for Sanitizing Swimming Pools – 56% Available Chlorine – Dichlor – 5 Pound Bucket

In The Swim Chlorine Shock Granules for Sanitizing Swimming Pools – 56% Available Chlorine – Dichlor – 5 Pound Bucket

4.6
£143
HTS Turbo Dichlor Granular Chlorine Sanitizer for Hot Tubs and Spas (2 lbs)

HTS Turbo Dichlor Granular Chlorine Sanitizer for Hot Tubs and Spas (2 lbs)

4.7
£96
HTH 52047 Swimming Pool Care Salt Shock, Stabilized Chlorinator, 1 dose treats 10000 gallons, 5x12oz Packets

HTH 52047 Swimming Pool Care Salt Shock, Stabilized Chlorinator, 1 dose treats 10000 gallons, 5x12oz Packets

4.4
£65
Doheny's Di-Chlor Granular Chlorine | Pro-Grade 3-in-1 Pool Chlorine Granules Sanitizer, Shock and A

Doheny's Di-Chlor Granular Chlorine | Pro-Grade 3-in-1 Pool Chlorine Granules Sanitizer, Shock and A

4.5
£774
SpaChoice 472-3-5081 Spa Chlorine Granules for Hot Tub, 5-Pounds

SpaChoice 472-3-5081 Spa Chlorine Granules for Hot Tub, 5-Pounds

4.6
£103
In The Swim Sodium Dichlor Chlorine Shock Granules for Sanitizing Swimming Pools – Fast Dissolving, pH Balanced Sanitizer - 56% Available Chlorine, 99% Sodium-Dichlor – 5 Pound

In The Swim Sodium Dichlor Chlorine Shock Granules for Sanitizing Swimming Pools – Fast Dissolving, pH Balanced Sanitizer - 56% Available Chlorine, 99% Sodium-Dichlor – 5 Pound

4.5
£87
Chlorine Dosing Tablets - Quick Dissolving

Chlorine Dosing Tablets - Quick Dissolving

4.2
£29
HTHSpa 86134 Clear Chlorinating Sanitizer, Spa & Hot Tub Chemical Controls Bacteria and Algae, 2.25 lbs

HTHSpa 86134 Clear Chlorinating Sanitizer, Spa & Hot Tub Chemical Controls Bacteria and Algae, 2.25 lbs

4.7
£35
Leisure Time E5 Spa 56 Chlorinating Granules for Spas and Hot Tubs, 5-Pounds

Leisure Time E5 Spa 56 Chlorinating Granules for Spas and Hot Tubs, 5-Pounds

4.8
£66
LEISURE TIME 22337A Spa 56 Chlorinating Granules for Hot Tubs, 2 lbs, gray

LEISURE TIME 22337A Spa 56 Chlorinating Granules for Hot Tubs, 2 lbs, gray

4.7
£38
Hot Spring Freshwater Concentrated Chlorine Granules 5kg for Hot Tub Pool Tubs Spa Springs

Hot Spring Freshwater Concentrated Chlorine Granules 5kg for Hot Tub Pool Tubs Spa Springs

4.5
£172
Chlorine Dichlor Granules sanitizer shock for Spas, Hot Tubs, Pools - 5-Pounds

Chlorine Dichlor Granules sanitizer shock for Spas, Hot Tubs, Pools - 5-Pounds

£384
Rx ClearStabilized Granular Chlorine | One 50-Pound Bucket | Use As Bactericide, Algaecide, and Disinfectant in Swimming Pools and Spas | Fast Dissolving and UV Protected

Rx ClearStabilized Granular Chlorine | One 50-Pound Bucket | Use As Bactericide, Algaecide, and Disinfectant in Swimming Pools and Spas | Fast Dissolving and UV Protected

4.5
£724
U.S. Pool Supply Pool Chlorine Floater Dispenser, Collapsible with Pop-Up Refill Indicator - Holds 3" Tablets, 7" Diameter, Durable Floating Chlorinator, Adjustable Flow for Balanced Delivery

U.S. Pool Supply Pool Chlorine Floater Dispenser, Collapsible with Pop-Up Refill Indicator - Holds 3" Tablets, 7" Diameter, Durable Floating Chlorinator, Adjustable Flow for Balanced Delivery

£41
Spa DepotDiChlor Hot Tub Sanitizing Shock, Best Choice Chlorine Granules, 2 lb. Each (2-Pack)

Spa DepotDiChlor Hot Tub Sanitizing Shock, Best Choice Chlorine Granules, 2 lb. Each (2-Pack)

£109
Dichlor Granular Chlorine Sanitizer for Hot Tubs and Spas (2 lbs)

Dichlor Granular Chlorine Sanitizer for Hot Tubs and Spas (2 lbs)

4.7
£40
Pool Mate 1-1304 Stabilized/Concentrated/Chlorinating Granules

Pool Mate 1-1304 Stabilized/Concentrated/Chlorinating Granules

4.6
£142
Ef-Chlor 4gm Water Purification Tablets - 20 Tablets Jar for 20000 Liters - General Disinfection and Sterilization - 1 Tablet Purifies 1000L Drinking Water for Overhead & Underground Tank

Ef-Chlor 4gm Water Purification Tablets - 20 Tablets Jar for 20000 Liters - General Disinfection and Sterilization - 1 Tablet Purifies 1000L Drinking Water for Overhead & Underground Tank

4.0
£17
Metacril Chlor Shock 1 kg Granular – Chlorine (Dichlor) Rapid Dissolution in Granules for Shock Treatment for Swimming Pool and Spa Hydromassage

Metacril Chlor Shock 1 kg Granular – Chlorine (Dichlor) Rapid Dissolution in Granules for Shock Treatment for Swimming Pool and Spa Hydromassage

4.7
£91
BioGuard Super Soluble Chlorine - 5 Lb

BioGuard Super Soluble Chlorine - 5 Lb

4.7
£176
SDIC GRANULAR CHLORINE-10KG BUCKET,AQUA PREMIA

SDIC GRANULAR CHLORINE-10KG BUCKET,AQUA PREMIA

5
£59
Spa Depot DiChlor Hot Tub Sanitizing Shock, Best Choice Chlorine Granules, 5 lb.

Spa Depot DiChlor Hot Tub Sanitizing Shock, Best Choice Chlorine Granules, 5 lb.

4.5
£54
AquaFinesse Hot Tube Water Care Kit - Dichlor (Powder)

AquaFinesse Hot Tube Water Care Kit - Dichlor (Powder)

4.8
£304
Hot Spring Freshwater Concentrated Chlorine Granules 1kg for Hot Tub Pool Tubs Spa Springs

Hot Spring Freshwater Concentrated Chlorine Granules 1kg for Hot Tub Pool Tubs Spa Springs

4.7
£51
Contributions from the Laboratory of the University of Pennsylvania. No. XIII. A Study of Some of the Derivatives of Mono- and Dichlor-Salicylic Acids

Contributions from the Laboratory of the University of Pennsylvania. No. XIII. A Study of Some of the Derivatives of Mono- and Dichlor-Salicylic Acids

£39
Leslie's Chlor Brite Pool Shock for Swimming Pools, Spas, and Hot Tubs - Granular Stabilized Sodium Dichlor Sanitizer - 8 Pound

Leslie's Chlor Brite Pool Shock for Swimming Pools, Spas, and Hot Tubs - Granular Stabilized Sodium Dichlor Sanitizer - 8 Pound

4.6
£168
JoyFanSwimming Pool Tablets, Chlorine Tablets, Instant Disinfection for Pools And Hot Tubs

JoyFanSwimming Pool Tablets, Chlorine Tablets, Instant Disinfection for Pools And Hot Tubs

4.0
£22
Hot Tub Things pH and Alkalinity Down - Water Balancing, Crystal Clear Water, Alkalinity Reducer for Spa and Swimming Pool, Maintenance, Comfortable Relaxation, Refreshing, 1.25 Pounds

Hot Tub Things pH and Alkalinity Down - Water Balancing, Crystal Clear Water, Alkalinity Reducer for Spa and Swimming Pool, Maintenance, Comfortable Relaxation, Refreshing, 1.25 Pounds

£95
SpaGuard Spa Chlorinating Concentrate - Advanced Spa Water Treatment for Hot Tubs and Spas, Quick Dissolving Oxidizer - 2 Lbs

SpaGuard Spa Chlorinating Concentrate - Advanced Spa Water Treatment for Hot Tubs and Spas, Quick Dissolving Oxidizer - 2 Lbs

4.7
£49
H2Ofun 5kg Stabilised Chlorine Granules For Swimming Pools & Hot Tub Spas

H2Ofun 5kg Stabilised Chlorine Granules For Swimming Pools & Hot Tub Spas

£49
SpaGuard Spa Chlorinating Concentrate - 5 Lb

SpaGuard Spa Chlorinating Concentrate - 5 Lb

4.8
£107
AquaDoc | Spa Chlorine Granules for Hot tub - Spa Sanitizing Granules for Hot Tubs - Recommended Chlorine for spa - Granulated Chlorine for hot tub and spa - Hot Tub Chlorinating Granules - 1lbs

AquaDoc | Spa Chlorine Granules for Hot tub - Spa Sanitizing Granules for Hot Tubs - Recommended Chlorine for spa - Granulated Chlorine for hot tub and spa - Hot Tub Chlorinating Granules - 1lbs

4.7
£39
Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 x 4 Pounds

Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 x 4 Pounds

4.5
£84
Doheny's Di-Chlor Shock - 12 - 1 lb. Bags

Doheny's Di-Chlor Shock - 12 - 1 lb. Bags

4.4
£143
HTH86230 Chlorine Sanitizer - 2lbs

HTH86230 Chlorine Sanitizer - 2lbs

4.6
£21
Proteam Spa Dichlor 8 lbs

Proteam Spa Dichlor 8 lbs

£124
Pool Power Shock - Stabalised Dichlor Granules Fast (Quick) Dissolving 10KG

Pool Power Shock - Stabalised Dichlor Granules Fast (Quick) Dissolving 10KG

£63
Pool Chemical Products Stabilised Chlorine Granules 20kg Swimming Pool Spa Hot Tub

Pool Chemical Products Stabilised Chlorine Granules 20kg Swimming Pool Spa Hot Tub

4.4
£594