Swimming pool and hot tub maintenance

500+ products

Water Electrolysis Tester, Lightweight Portable Monitor for Evaluating the Quality of Electrolyzed Water. (1/4)

Water Electrolysis Tester, Lightweight Portable Monitor for Evaluating the Quality of Electrolyzed Water. (2/4)

Water Electrolysis Tester, Lightweight Portable Monitor for Evaluating the Quality of Electrolyzed Water.

~~£39.83~~

Free shipping

3 in 1 Portable Digital EC PH Temperature Tester Water Quality Tester Purity Test Pen (1/5)

3 in 1 Portable Digital EC PH Temperature Tester Water Quality Tester Purity Test Pen (2/5)

3 in 1 Portable Digital EC PH Temperature Tester Water Quality Tester Purity Test Pen (3/5)

3 in 1 Portable Digital EC PH Temperature Tester Water Quality Tester Purity Test Pen (4/5)

3 in 1 Portable Digital EC PH Temperature Tester Water Quality Tester Purity Test Pen

~~£54.46~~

Free shipping

3 in 1 Portable Digital EC PH Temperature Tester Water Quality Tester Purity Test Pen

~~£53.99~~

Free shipping

Portable Swimming Pool Water Tester PH Chlorine Detector Water Quality Test Monitor (1/5)

Portable Swimming Pool Water Tester PH Chlorine Detector Water Quality Test Monitor (2/5)

Portable Swimming Pool Water Tester PH Chlorine Detector Water Quality Test Monitor (3/5)

Portable Swimming Pool Water Tester PH Chlorine Detector Water Quality Test Monitor (4/5)

Portable Swimming Pool Water Tester PH Chlorine Detector Water Quality Test Monitor

~~£53.99~~

Free shipping

Floating chlorine dispenser for swimming pools with integrated thermometer and soap pump – For chemical treatment, disinfection and handwashing, adjustable float, tablet compartment (1/3)

Floating chlorine dispenser for swimming pools with integrated thermometer and soap pump – For chemical treatment, disinfection and handwashing, adjustable float, tablet compartment

Free shipping

Floating chlorine dispenser for swimming pools with integrated thermometer and soap pump – For chemical treatment, disinfection and handwashing, adjustable float, tablet compartment

~~£22.58~~

Free shipping

Automatic Calibration Waterproof Level: TP67 High Precision Portable Multifunctional Salinity/Temperature/TDS/EC/PH Five-in-One Test Pen PH Water Quality Detector (1/5)

Automatic Calibration Waterproof Level: TP67 High Precision Portable Multifunctional Salinity/Temperature/TDS/EC/PH Five-in-One Test Pen PH Water Quality Detector

~~£55.99~~

Free shipping

7 in 1 TDS EC PH SALT SG ORP TEMP Water Quality Tester, IP67 Waterproof Multi-function Digital Water Tester (1/5)

7 in 1 TDS EC PH SALT SG ORP TEMP Water Quality Tester, IP67 Waterproof Multi-function Digital Water Tester (2/5)

7 in 1 TDS EC PH SALT SG ORP TEMP Water Quality Tester, IP67 Waterproof Multi-function Digital Water Tester (3/5)

7 in 1 TDS EC PH SALT SG ORP TEMP Water Quality Tester, IP67 Waterproof Multi-function Digital Water Tester (4/5)

7 in 1 TDS EC PH SALT SG ORP TEMP Water Quality Tester, IP67 Waterproof Multi-function Digital Water Tester

~~£55.99~~

Free shipping

Ulisem Water Quality Tester, 4-in-1 pH Meter and TDS&EC Temperature Meter, Meter with LCD Screen, High Precision 0.01 Resolution, for Drinking Water, Swimming Pools, Aquariums, Hydroponics (cannot (1/5)

Ulisem Water Quality Tester, 4-in-1 pH Meter and TDS&EC Temperature Meter, Meter with LCD Screen, High Precision 0.01 Resolution, for Drinking Water, Swimming Pools, Aquariums, Hydroponics (cannot

~~£32.35~~

Free shipping

4 in 1 Digital pH Tester, pH Meter with LCD Display, High Precision (0.01 Resolution), Water Quality Tester for Drinking Water, Swimming Pools, Aquariums and Hydroponics. (1/5)

4 in 1 Digital pH Tester, pH Meter with LCD Display, High Precision (0.01 Resolution), Water Quality Tester for Drinking Water, Swimming Pools, Aquariums and Hydroponics.

~~£42.64~~

Free shipping

Electrolyzer Water Quality Tester - Portable Water Impurity Monitor Electrolyzer Machine Testing Meter--INHHUB (1/4)

Electrolyzer Water Quality Tester - Portable Water Impurity Monitor Electrolyzer Machine Testing Meter--INHHUB (2/4)

Electrolyzer Water Quality Tester - Portable Water Impurity Monitor Electrolyzer Machine Testing Meter--INHHUB

~~£40.43~~

Free shipping

Inch Floating Chlorine Dispenser, Adjustable Chemical Floater for Indoor and Outdoor Pools (1/5)

Inch Floating Chlorine Dispenser, Adjustable Chemical Floater for Indoor and Outdoor Pools (2/5)

Inch Floating Chlorine Dispenser, Adjustable Chemical Floater for Indoor and Outdoor Pools (3/5)

Inch Floating Chlorine Dispenser, Adjustable Chemical Floater for Indoor and Outdoor Pools (4/5)

Inch Floating Chlorine Dispenser, Adjustable Chemical Floater for Indoor and Outdoor Pools

Free shipping

Dellonda DL50 Chlorine Granules for Hot Tubs/Spas & Swimming Pools 1kg (1/5)

Dellonda DL50 Chlorine Granules for Hot Tubs/Spas & Swimming Pools 1kg (2/5)

Dellonda DL50 Chlorine Granules for Hot Tubs/Spas & Swimming Pools 1kg (3/5)

Dellonda DL50 Chlorine Granules for Hot Tubs/Spas & Swimming Pools 1kg (4/5)

Dellonda DL50 Chlorine Granules for Hot Tubs/Spas & Swimming Pools 1kg

Free shipping

Floating chlorine dispenser for swimming pools with integrated thermometer and soap pump – For chemical treatment, disinfection and handwashing, adjustable float, tablet compartment--DTEKGAZ

~~£27.71~~

Free shipping

Water Electrolyzer - Portable Water Quality Tester, Lightweight Water Impurity Monitor, Easy-to-Use Electrolyzer Test Monitor (1/5)

Water Electrolyzer - Portable Water Quality Tester, Lightweight Water Impurity Monitor, Easy-to-Use Electrolyzer Test Monitor (2/5)

Water Electrolyzer - Portable Water Quality Tester, Lightweight Water Impurity Monitor, Easy-to-Use Electrolyzer Test Monitor (3/5)

Water Electrolyzer - Portable Water Quality Tester, Lightweight Water Impurity Monitor, Easy-to-Use Electrolyzer Test Monitor

~~£40.14~~

Free shipping

5" Floating Chlorine Dispenser - Chlorine Tablet Dispenser - Adjustable Chemical Float for Indoor and Outdoor Pools (1/4)

5" Floating Chlorine Dispenser - Chlorine Tablet Dispenser - Adjustable Chemical Float for Indoor and Outdoor Pools (2/4)

5" Floating Chlorine Dispenser - Chlorine Tablet Dispenser - Adjustable Chemical Float for Indoor and Outdoor Pools (3/4)

5" Floating Chlorine Dispenser - Chlorine Tablet Dispenser - Adjustable Chemical Float for Indoor and Outdoor Pools

~~£40.33~~

Free shipping

Water quality tester, electrolyzer, TDS iron bar for home use, EU plug, 220V (1/5)

Water quality tester, electrolyzer, TDS iron bar for home use, EU plug, 220V (2/5)

Water quality tester, electrolyzer, TDS iron bar for home use, EU plug, 220V (3/5)

Water quality tester, electrolyzer, TDS iron bar for home use, EU plug, 220V

~~£33.84~~

Free shipping

Water electrolysis device TDS electrolyzer water quality test 220V (1/4)

Water electrolysis device TDS electrolyzer water quality test 220V (2/4)

Water electrolysis device TDS electrolyzer water quality test 220V

~~£38.28~~

Free shipping

Water Quality Tester, Portable 5 in 1 Function Digital Water Quality Test PH/Salinity/Temp/TDS/EC Meter for Garden Home Lab (1/4)

Water Quality Tester, Portable 5 in 1 Function Digital Water Quality Test PH/Salinity/Temp/TDS/EC Meter for Garden Home Lab (2/4)

Water Quality Tester, Portable 5 in 1 Function Digital Water Quality Test PH/Salinity/Temp/TDS/EC Meter for Garden Home Lab

~~£49.58~~

Free shipping

7 in 1 Aquarium Test Strips, pH Test Nitrite, Nitrate, Total Hardness, Free Chlorine, Alkalinity, Carbonate, Accurate Saltwater, Aquarium Freshwater - 100 Pack (1/4)

7 in 1 Aquarium Test Strips, pH Test Nitrite, Nitrate, Total Hardness, Free Chlorine, Alkalinity, Carbonate, Accurate Saltwater, Aquarium Freshwater - 100 Pack

~~£44.55~~

Free shipping

Bandelettes de test de dureté d'eau-Kit rapide et facile avec 50 bandelettes (0-425 ppm)-Test de dureté totale (calcium et magnésium)-Idéal pour adoucisseurs, lave-vaisselle, puits, spa et piscine (1/5)

Bandelettes de test de dureté d'eau-Kit rapide et facile avec 50 bandelettes (0-425 ppm)-Test de dureté totale (calcium et magnésium)-Idéal pour adoucisseurs, lave-vaisselle, puits, spa et piscine

Salinity Tester 0-199.9 Ppt Pool Salt Tester Swimming Pool Salt Meter Digital Pen-Type Pool Salinity Tester for Seawater/Saltwater Salinity Testing (1/4)

Salinity Tester 0-199.9 Ppt Pool Salt Tester Swimming Pool Salt Meter Digital Pen-Type Pool Salinity Tester for Seawater/Saltwater Salinity Testing

Professional pH tester, automatic calibration function, suitable for the measuring range of aquariums and swimming pools (1/4)

Professional pH tester, automatic calibration function, suitable for the measuring range of aquariums and swimming pools (2/4)

Professional pH tester, automatic calibration function, suitable for the measuring range of aquariums and swimming pools

~~£39.51~~

Free shipping

8-in-1 Electronic pH Meter for Swimming Pools, pH/TDS/SALT/SG/ORP/EC/TEMP/H2 Tester, Water Quality Tester for Swimming Pools, Spas, Aquariums, Drinking Water, and Hydroponics (1/4)

8-in-1 Electronic pH Meter for Swimming Pools, pH/TDS/SALT/SG/ORP/EC/TEMP/H2 Tester, Water Quality Tester for Swimming Pools, Spas, Aquariums, Drinking Water, and Hydroponics

16-in-1 Drinking Water Test Kit - Drinking Water Test Strips - Water Test Kit for Home Water Quality Testing - Quick and Easy Testing - 100 Pieces (1/4)

16-in-1 Drinking Water Test Kit - Drinking Water Test Strips - Water Test Kit for Home Water Quality Testing - Quick and Easy Testing - 100 Pieces (2/4)

16-in-1 Drinking Water Test Kit - Drinking Water Test Strips - Water Test Kit for Home Water Quality Testing - Quick and Easy Testing - 100 Pieces

~~£54.78~~

Free shipping

Dosierschwimmer

Free shipping

Floating chlorine dispenser for swimming pools, mini floating chemical dispenser for chlorine tablets up to 1.8 inches, 4 adjustable flow vents, suitable for swimming pools, spas, hot tubs (1/4)

Floating chlorine dispenser for swimming pools, mini floating chemical dispenser for chlorine tablets up to 1.8 inches, 4 adjustable flow vents, suitable for swimming pools, spas, hot tubs

~~£37.34~~

Free shipping

Accessories for attaching chlorine tablet/algae treatment poles for swimming pools Buoyancy dosing accessories for the dosing and maintenance of swimming pool chemicals. (1/3)

Accessories for attaching chlorine tablet/algae treatment poles for swimming pools Buoyancy dosing accessories for the dosing and maintenance of swimming pool chemicals.

~~£23.06~~

Free shipping

Solar pool ionizer, solar pool cleaner, spa fountain cleaning device (1/4)

Solar pool ionizer, solar pool cleaner, spa fountain cleaning device (2/4)

Solar pool ionizer, solar pool cleaner, spa fountain cleaning device

Disinfectant tablets for swimming pools, effervescent tablets, disinfectant tablets based on trichloroisocyanuric acid, chlorine tablets, fast-dissolving tablets, 50 tablets.--BIEMMEDUE

~~£37.19~~

Free shipping

Salinity Tester 0-199.9 Ppt Pool Salt Tester Swimming Pool Salt Meter Digital Pen Type Pool Salinity Tester for Seawater/Saltwater Salinity Testing

~~£44.46~~

Free shipping

2 in 1 pH Chlorine Tester PC 102, Measuring Device for Water Quality, pH and Chlorine Tester for Swimming Pool and Aquarium (Cl2). (1/4)

2 in 1 pH Chlorine Tester PC 102, Measuring Device for Water Quality, pH and Chlorine Tester for Swimming Pool and Aquarium (Cl2). (2/4)

2 in 1 pH Chlorine Tester PC 102, Measuring Device for Water Quality, pH and Chlorine Tester for Swimming Pool and Aquarium (Cl2).

~~£45.09~~

Free shipping

Water Quality, PC-102B CL2 Electric Pool Tester Chlorine and pH Tester Swimming Pool Spa Water Quality Analyzer with Probe (1/5)

Water Quality, PC-102B CL2 Electric Pool Tester Chlorine and pH Tester Swimming Pool Spa Water Quality Analyzer with Probe (2/5)

Water Quality, PC-102B CL2 Electric Pool Tester Chlorine and pH Tester Swimming Pool Spa Water Quality Analyzer with Probe (3/5)

Water Quality, PC-102B CL2 Electric Pool Tester Chlorine and pH Tester Swimming Pool Spa Water Quality Analyzer with Probe

~~£42.91~~

Free shipping

High Precision TDS/EC/Salinity/SG/Temperature Digital Water Tester (1/5)

High Precision TDS/EC/Salinity/SG/Temperature Digital Water Tester (2/5)

High Precision TDS/EC/Salinity/SG/Temperature Digital Water Tester (3/5)

High Precision TDS/EC/Salinity/SG/Temperature Digital Water Tester

~~£41.60~~

Free shipping

Ulisem Digital Salinity Tester for Saltwater Pools and Ponds (1/5)

Ulisem Digital Salinity Tester for Saltwater Pools and Ponds (2/5)

Ulisem Digital Salinity Tester for Saltwater Pools and Ponds (3/5)

Ulisem Digital Salinity Tester for Saltwater Pools and Ponds

~~£33.59~~

Free shipping

Swimming pool float dispenser - Chemical dispenser for chlorine or bromine tablets - for the dosed dispensing of swimming pool additives (1/5)

Swimming pool float dispenser - Chemical dispenser for chlorine or bromine tablets - for the dosed dispensing of swimming pool additives (2/5)

Swimming pool float dispenser - Chemical dispenser for chlorine or bromine tablets - for the dosed dispensing of swimming pool additives (3/5)

Swimming pool float dispenser - Chemical dispenser for chlorine or bromine tablets - for the dosed dispensing of swimming pool additives (4/5)

Swimming pool float dispenser - Chemical dispenser for chlorine or bromine tablets - for the dosed dispensing of swimming pool additives

~~£31.16~~

Free shipping

Water Electrolysis Device TDS Water Quality Test 220V (1/4)

Water Electrolysis Device TDS Water Quality Test 220V (2/4)

Water Electrolysis Device TDS Water Quality Test 220V

~~£42.88~~

Free shipping

Swimming pool water quality tester – Measures chlorine, TDS and pH value – Accurate and reliable--DTEKGAZ

~~£37.64~~

Free shipping

5-in-1 Digital Portable Multifunctional Water Quality Tester: pH/Salinity/Temperature/TDS/EC (1/5)

5-in-1 Digital Portable Multifunctional Water Quality Tester: pH/Salinity/Temperature/TDS/EC (2/5)

5-in-1 Digital Portable Multifunctional Water Quality Tester: pH/Salinity/Temperature/TDS/EC (3/5)

5-in-1 Digital Portable Multifunctional Water Quality Tester: pH/Salinity/Temperature/TDS/EC

~~£41.73~~

Free shipping

Digital TDS Water Quality Analyzer detects the impurity content of water and is suitable for drinking water, swimming pools, aquariums and hydroponics (1/4)

Digital TDS Water Quality Analyzer detects the impurity content of water and is suitable for drinking water, swimming pools, aquariums and hydroponics

~~£38.00~~

Free shipping

Electronic Chlorine and pH Tester for Swimming Pools - Water Quality Meter (1/5)

Electronic Chlorine and pH Tester for Swimming Pools - Water Quality Meter (2/5)

Electronic Chlorine and pH Tester for Swimming Pools - Water Quality Meter (3/5)

Electronic Chlorine and pH Tester for Swimming Pools - Water Quality Meter (4/5)

Electronic Chlorine and pH Tester for Swimming Pools - Water Quality Meter

~~£50.88~~

Free shipping

Pool star dispenser, made of plastic, for daily maintenance and water quality stabilization. Accessories compatible with various cleaning tablets. -- 1 piece -- BIEMMEDUE (1/5)

Pool star dispenser, made of plastic, for daily maintenance and water quality stabilization. Accessories compatible with various cleaning tablets. -- 1 piece -- BIEMMEDUE

~~£35.17~~

Free shipping

Floating diffuser 12.7cm

~~£38.25~~

Free shipping

The R0523000 is compatible with Pentair Intellichlor salt chlorinators, models IC60, IC40 and IC20. (1/5)

The R0523000 is compatible with Pentair Intellichlor salt chlorinators, models IC60, IC40 and IC20. (2/5)

The R0523000 is compatible with Pentair Intellichlor salt chlorinators, models IC60, IC40 and IC20. (3/5)

The R0523000 is compatible with Pentair Intellichlor salt chlorinators, models IC60, IC40 and IC20.

~~£26.12~~

Free shipping

Ulisem Digital Salinity Tester for Saltwater Pools and Ponds

~~£33.23~~

Free shipping

Chlorine PH Water Meter Tester Kit, Portable Digital Analysis Monitor (1/4)

Chlorine PH Water Meter Tester Kit, Portable Digital Analysis Monitor (2/4)

Chlorine PH Water Meter Tester Kit, Portable Digital Analysis Monitor

~~£46.60~~

Free shipping

Portable Digital Salinity Tester for Food Kitchen and Aquarium - Accurate Salt Measurement in Sea and Brackish Water - (1/5)

Portable Digital Salinity Tester for Food Kitchen and Aquarium - Accurate Salt Measurement in Sea and Brackish Water - (2/5)

Portable Digital Salinity Tester for Food Kitchen and Aquarium - Accurate Salt Measurement in Sea and Brackish Water - (3/5)

Portable Digital Salinity Tester for Food Kitchen and Aquarium - Accurate Salt Measurement in Sea and Brackish Water -

~~£49.15~~

Free shipping

Water Electrolyzer - Portable Water Quality Tester, Lightweight Water Impurity Monitor, Easy-to-Use Electrolyzer Test Monitor

~~£46.53~~

Free shipping

PH Tester, 2 in 1 Portable Chlorine and pH Meter CL2, Water Quality Analysis, Measurement and Monitoring for Pool, Spa and Spring Water MUMU (1/4)

PH Tester, 2 in 1 Portable Chlorine and pH Meter CL2, Water Quality Analysis, Measurement and Monitoring for Pool, Spa and Spring Water MUMU (2/4)

PH Tester, 2 in 1 Portable Chlorine and pH Meter CL2, Water Quality Analysis, Measurement and Monitoring for Pool, Spa and Spring Water MUMU (3/4)

PH Tester, 2 in 1 Portable Chlorine and pH Meter CL2, Water Quality Analysis, Measurement and Monitoring for Pool, Spa and Spring Water MUMU

~~£27.59~~

2-in-1 Chlorine and pH Tester, Portable Water Analyzer for Swimming Pools, Spas and Aquariums (1/5)

2-in-1 Chlorine and pH Tester, Portable Water Analyzer for Swimming Pools, Spas and Aquariums (2/5)

2-in-1 Chlorine and pH Tester, Portable Water Analyzer for Swimming Pools, Spas and Aquariums (3/5)

2-in-1 Chlorine and pH Tester, Portable Water Analyzer for Swimming Pools, Spas and Aquariums

Free shipping

Chlorine charger connection pack with tube nut joint rope for Hayward CL200 CL220 (1/5)

Chlorine charger connection pack with tube nut joint rope for Hayward CL200 CL220 (2/5)

Chlorine charger connection pack with tube nut joint rope for Hayward CL200 CL220 (3/5)

Chlorine charger connection pack with tube nut joint rope for Hayward CL200 CL220

~~£29.72~~

Free shipping

16 in 1 Drinking Water Test Kit Professional Hardness Test Kits, Tap and Well Water Test Strips (1/4)

16 in 1 Drinking Water Test Kit Professional Hardness Test Kits, Tap and Well Water Test Strips (2/4)

16 in 1 Drinking Water Test Kit Professional Hardness Test Kits, Tap and Well Water Test Strips

~~£52.08~~

Free shipping

4 in 1 pH Meter - Water Quality Tester for Swimming Pools, Aquariums and Hydroponics - pH Measuring Range 0-14, TDS 0-19990ppm (1/5)

4 in 1 pH Meter - Water Quality Tester for Swimming Pools, Aquariums and Hydroponics - pH Measuring Range 0-14, TDS 0-19990ppm (2/5)

4 in 1 pH Meter - Water Quality Tester for Swimming Pools, Aquariums and Hydroponics - pH Measuring Range 0-14, TDS 0-19990ppm (3/5)

4 in 1 pH Meter - Water Quality Tester for Swimming Pools, Aquariums and Hydroponics - pH Measuring Range 0-14, TDS 0-19990ppm

~~£43.65~~

Free shipping

Water Quality Test Meter TDS PH EC Temperature 4-in-1 Set Digital Tester with LCD Screen for Swimming Pools and Aquariums (1/5)

Water Quality Test Meter TDS PH EC Temperature 4-in-1 Set Digital Tester with LCD Screen for Swimming Pools and Aquariums (2/5)

Water Quality Test Meter TDS PH EC Temperature 4-in-1 Set Digital Tester with LCD Screen for Swimming Pools and Aquariums (3/5)

Water Quality Test Meter TDS PH EC Temperature 4-in-1 Set Digital Tester with LCD Screen for Swimming Pools and Aquariums

~~£40.24~~

Free shipping

7 in 1 Water Tester for Pools and Spas, 100 Test Strips, Chlorine and pH Test, Bromine, Total Hardness, Total Alkalinity, Cyanuric Acid, Total Chlorine (1/5)

7 in 1 Water Tester for Pools and Spas, 100 Test Strips, Chlorine and pH Test, Bromine, Total Hardness, Total Alkalinity, Cyanuric Acid, Total Chlorine

~~£47.46~~

Free shipping