Fresh Water Aquarium Water Test Kits

532 results

API FRESH WATER MASTER TEST KIT 800 TESTS AQUARIUM FISH TANK pH Nitrate/Nitrite
Brand new · API
£29.95
Free postage
Click & Collect
3,788 sold
Watersafe Drinking Water Test Kit for Well or Tap Water WS-425C
Brand new
£29.99
Free postage
Click & Collect
839 sold
NT LABS AQUARIUM LAB MULTI-TEST MASTER KIT WATER TESTING TROPICAL FISH TANK
Brand new
(232)
£25.99
Free postage
Click & Collect
7,289 sold
API Test Strips 5 in 1 pH KH GH Nitrate Nitrite Aquarium Fish Tank Water Quality
Brand new · API
(4)
£11.99 to £26.99
Free postage
Click & Collect
21 sold
API Freshwater Master Test Kit Liquid pH Ammonia Nitrite Nitrate for Fish Tank
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(243)
£29.99
(£29.99/Unit)
Free postage
Click & Collect
1,226 sold
API Test Kits Ammonia Nitrate Nitrite pH KH GH Phosphate Freshwater Marine
Brand new · API
(27)
£8.49 to £19.99
Free postage
Click & Collect
100 sold
API Freshwaster And Saltwater Aquarium Test Kits
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
£6.99 to £29.99
Free postage
Click & Collect
151 sold
NT Labs Test Reagent Bottle Replacement Spare pH Nitrite GH Ammonia Fish Tank
Brand new
£3.19 to £29.99
Free postage
336 sold
API GH & KH Test Kit Freshwater Aquarium Test Kit 1-Count For Fresh Water
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(7)
£11.49
(£11.49/Unit)
Free postage
Click & Collect
469 sold
API Phosphate Test Kit for Freshwater & Saltwater Aquarium 150-Test Kit
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(27)
£11.99
(£11.99/Unit)
Free postage
Click & Collect
262 sold
NT LABS TEST KITS TROPICAL/COLDWATER AQUARIUM LAB WATER TESTING FISH TANK
Brand new
(4)
£7.95 to £25.99
Free postage
Click & Collect
504 sold
SEACHEM AMMONIA ALERT TEST KIT AMMONIA MONITOR MARINE FRESH AQUARIUM FISH TANK
Brand new · Seachem
(98)
£11.05
Free postage
Click & Collect
4,158 sold
NT Labs Mini Test Kit 120 Tests For Freshwater & Tropical Aquariums Fish Tank
Brand new · NT Labs
(68)
£13.95
Free postage
Click & Collect
1,834 sold
JBL CombiSet Test Kit For Freshwater Aquarium- pH, KH, CO2, NO2, NO3 + NH4
Brand new · JBL
(4)
£39.95
Free postage
Click & Collect
204 sold
Fluoride Water Test Strips 0-100+ ppm (50 strips)
Brand new
£18.99
Free postage
Click & Collect
79 sold
Watersafe Drinking Water Test kit for Lead (5ppb)
Brand new
(8)
£19.99
Free postage
Click & Collect
564 sold
API MASTER TEST KITS FRESH WATER MARINE REEF SALTWATER STRIPS WATER FISH TANK
Brand new · API
(243)
£12.99 to £32.99
Free postage
Click & Collect
698 sold
API GH & KH WATER TEST KIT FISH TANK TROPICAL POND GENERAL CARBONATE HARDNESS
Brand new · API
(7)
£11.99
Free postage
Click & Collect
1,434 sold
Water Hardness Test Strips in FOIL x 5 Drinking Water Softener Testing Setup
Brand new
£3.99
Free postage
174 sold
Tetra Test 6in1 - Aquarium Test Kit 25 Strips PH, KH, GH, N02, NO3, CL2
Brand new · Tétra
(144)
£8.49
Free postage
Click & Collect
SEACHEM ALERT AMMONIA Ph COMBO MONITOR CONTINUOUS WATER TEST AQUARIUM FISH TANK
Brand new · Seachem
(68)
£14.95
Free postage
Click & Collect
69 sold
Tetra 6 in 1 Water Test Kit Aquarium - Nitrate PH KH Nitrite Tropical Fish Tank
Brand new · Tétra
(25)
£7.25
Free postage
Click & Collect
1,095 sold
Tetra 6in1 Aquarium Test Kit Tropical PH KH GH NO2 NO3 Chlorine 25 Strips
Brand new · Tétra
(25)
£9.99
Free postage
Click & Collect
33 sold
JBL PROSCAN WATER ANALYSIS KIT & RECHARGE REFILL TEST SMARTPHONE AQUARIUM TANK
Brand new · JBL
(47)
£14.75 to £28.99
Free postage
Click & Collect
592 sold
Tetra Nitrite Test Kit for Ponds and Aquariums
Brand new · Tétra
(9)
£6.99
Free postage
Click & Collect
Colombo Aqua Test Lab Professional Koi Pond Fresh Marine Sea Water Test Kit Sale
Brand new · Colombo
(38)
£39.99
Free postage
Only 1 left.
NT Labs Test Kit Aquarium Fish Tank Tropical Freshwater Lab Testing pH & More
Brand new
(8)
£11.49
Free postage
Click & Collect
35 sold
NT LABS AQUARIUM LAB MULTI-TEST MASTER KIT WATER TESTING TROPICAL FISH TANK
Brand new
£24.99
Free postage
Click & Collect
47 sold
100Pcs 7-in-1 AQUARIUM PH TEST KIT TEST STRIPS TROPICAL FISH TANK WATER TESTER
Brand new · Unbranded
£7.48 to £10.29
Free postage
Click & Collect
JBL ProAquaTest Lab Water Test Case
Pre-owned · JBL
£94.28
or Best Offer
£7.19 P&P
NT Labs Water Treatment Mini Test Kit for Fish & Aquarium Freshwater 120 Tests
Brand new · NT Labs
(68)
£10.69
or Best Offer
£2.29 P&P
26 sold
API Test Kits Aquarium Water Testing pH NO2 NO3 Liquid Strips Master Fresh Marin
Brand new · API
(243)
£6.79 to £35.96
Free postage
Click & Collect
Heavy Metals Water Test Kit - Test for Heavy Metals at home or office
Brand new
(7)
£14.99
Free postage
Click & Collect
295 sold
API Reef Master Test Kit Tests Calcium Carbonate Hardness Phosphate & Nitrite
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(7)
£27.49
(£27.49/Unit)
Free postage
Click & Collect
81 sold
Seachem Alert Combo pH & Ammonia Monitor 6 month/1 year Water Test Fish Tank
Brand new · Seachem
(12)
£15.20 to £16.95
Free postage
Click & Collect
162 sold
15 Minute Water Bacteria Test Detects: Coliform and Non-Coliform Bacteria
Brand new
£18.99
Free postage
Click & Collect
Interpet Bioactive Tapsafe Aquarium Water Dechlorinator & 50 ml (Pack of 1) New
Brand new · Interpet
(3)
£3.82
Free postage
SimplexHealth Drinking Water Free Chlorine Test Kit 0-300ppm (10 Strips)
Brand new
£3.99
Free postage
95 sold
100pcs 16 IN 1 Drinking Water Test Strips For Home Well Water Quality Testing
Brand new · Unbranded
£14.98
Free postage
RIKKA GH KH pH Freshwater Aquarium Water Test Kit Up to 50 tests. NEW!!!
Brand new
£9.71
Free postage
Nt Labs Aquarium Labs Testing Kits Tropical Cold Water Pond Fish Tank Multi Test
Brand new
(232)
£8.95 to £26.95
Free postage
Click & Collect
75 sold
SEACHEM AMMONIA ALERT TEST KIT AMMONIA MONITOR MARINE FRESH AQUARIUM FISH TANK
Brand new · Seachem
(98)
£10.85
Free postage
Click & Collect
24 sold
Watersafe Drinking Water Test kit for Bacteria
Brand new
£12.99
Free postage
Click & Collect
77 sold
SALIFERT PHOSPHATE PO4 PROFI TEST KIT MARINE REEF AQUARIUM FISH TANK
Brand new
£11.75
Free postage
Click & Collect
1,311 sold
JBL Pro AquaTest Lab Freshwater Aquarium Kit Professional Fish Tank Aqua Test
Brand new · JBL
(4)
£87.95
Free postage
Click & Collect
105 sold
Waterlife Ammonia Nh3/Nh4 Water Test 50 Kits Included
Brand new · Waterlife
(7)
£5.99
Free postage
Click & Collect
API MASTER TESTING KIT, AQUADIP TEST STRIPS PO4, GH&KH, 3d PrintHOLDER, aquarium
New (other) · API
£37.08
Free postage
Precision Labs Phosphate Test Strips 0-100ppm (50 Strips)
Brand new
£19.99
Free postage
Click & Collect
7-in-1 & Ammonia Aquarium Test Strips, Water Testing Kit for Freshwater & Marine
Brand new
(6)
£10.99 to £19.99
Free postage
Click & Collect
58 sold
BLAGDON WATER QUALITY POND DIP TEST KIT 60 TESTS Ph Ammonia Nitrite Nitate GH KH
Brand new · Interpet
(3)
£15.19
Free postage
Click & Collect
57 sold
API pH Test Kit for Freshwater Aquarium 150-Test Kit For Fresh Water
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(21)
£9.79
(£9.79/Unit)
Free postage
Click & Collect
231 sold
Tetra Test Kits Water Testing Sets for Fish Tanks Ponds pH KH GH NO2 NO3 O2
Brand new · Tétra
(144)
£6.99 to £14.96
Free postage
Click & Collect
eSHa Aquarium Fish Tank Treatments Gastopex Heximata Gdex NDX 2000 Exit Optima
Brand new · eSHa
(40)
£7.49 to £14.49
Free postage
Click & Collect
302 sold
API Carbonate Hardness Test Kit for Freshwater & Saltwater Aquarium Test Kit
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(9)
£8.99
(£8.99/Unit)
Free postage
Click & Collect
70 sold
API Freshwater pH Test & Adjuster Kit Deluxe For Fresh Water
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(7)
£11.99
(£11.99/Unit)
Free postage
Click & Collect
91 sold
SimplexHealth Drinking Water Bacteria Test Kit Home Use inc detects E.coli
Detects E.coli, serratia, enterobacter, ctirobacter
Brand new
£12.99
Free postage
Click & Collect
442 sold
SALIFERT NITRATE NO3 PROFI TEST KIT MARINE REEF FISH TANK AQUARIUM
Brand new
£12.45
Free postage
Click & Collect
849 sold
JBL PROSCAN RECHARGE WATER-ANALYSIS STRIPS FOR SMARTPHONE APP AQUARIUM FISH TANK
Brand new · JBL
(31)
£14.75
Free postage
Click & Collect
509 sold
RIKKA 3 in 1: NO3 PO4 Fe Freshwater Aquarium Test Kit NEW!!!
Brand new
£10.78
Free postage
100x 5 In 1 Aquarium Test Strips Kit Fish Tank Pond Water Fresh PH Tester BT*_^
Brand new · Unbranded
£8.99
Free postage

Best selling

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Top-rated

See all

API Freshwater Master Test Kit pH No2 Tropical Fish Tank
(243)

98% agree - Would recommend
£29.99 New
NT Labs Aquarium Lab Multi-test Kit - NTLABS
(232)

97% agree - Would recommend
£24.99 New
Tetra Test 6in1 Strips Aquarium to Test 6 Essential Water Quality Parameters - Pack of 25
(144)

100% agree - Would recommend
£6.99 New
API 55898 5 in 1 Aquarium Test Strips - Pack of 25
(73)

100% agree - Would recommend
£6.00 New
NT Labs Aquarium Water pH Test Kit - 120 Count
(68)

100% agree - Would recommend
£10.69 New
JBL ProScan Recharge Aquarium Test Strips Refill - 24 Count (2542100)
(31)

96% agree - Would recommend
£14.75 New
API Phosphate Test Kit - Tropical Coldwater and Marines Fish Tank Aquarium
(27)

96% agree - Would recommend
£11.90 New
£10.78 Used
IMPORT EFN UK 77002 eSHa Quick Test Ph Testing Strips 50
(12)

72% agree - Would recommend
£11.99 New

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Fresh Water Aquarium Water Test Kits

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532 results

API FRESH WATER MASTER TEST KIT 800 TESTS AQUARIUM FISH TANK pH Nitrate/Nitrite

Watersafe Drinking Water Test Kit for Well or Tap Water WS-425C

NT LABS AQUARIUM LAB MULTI-TEST MASTER KIT WATER TESTING TROPICAL FISH TANK

API Test Strips 5 in 1 pH KH GH Nitrate Nitrite Aquarium Fish Tank Water Quality

API Freshwater Master Test Kit Liquid pH Ammonia Nitrite Nitrate for Fish Tank

API Test Kits Ammonia Nitrate Nitrite pH KH GH Phosphate Freshwater Marine

API Freshwaster And Saltwater Aquarium Test Kits

NT Labs Test Reagent Bottle Replacement Spare pH Nitrite GH Ammonia Fish Tank

API GH & KH Test Kit Freshwater Aquarium Test Kit 1-Count For Fresh Water

API Phosphate Test Kit for Freshwater & Saltwater Aquarium 150-Test Kit

NT LABS TEST KITS TROPICAL/COLDWATER AQUARIUM LAB WATER TESTING FISH TANK

SEACHEM AMMONIA ALERT TEST KIT AMMONIA MONITOR MARINE FRESH AQUARIUM FISH TANK

NT Labs Mini Test Kit 120 Tests For Freshwater & Tropical Aquariums Fish Tank

JBL CombiSet Test Kit For Freshwater Aquarium- pH, KH, CO2, NO2, NO3 + NH4

Fluoride Water Test Strips 0-100+ ppm (50 strips)

Watersafe Drinking Water Test kit for Lead (5ppb)

API MASTER TEST KITS FRESH WATER MARINE REEF SALTWATER STRIPS WATER FISH TANK

API GH & KH WATER TEST KIT FISH TANK TROPICAL POND GENERAL CARBONATE HARDNESS

Water Hardness Test Strips in FOIL x 5 Drinking Water Softener Testing Setup

Tetra Test 6in1 - Aquarium Test Kit 25 Strips PH, KH, GH, N02, NO3, CL2

SEACHEM ALERT AMMONIA Ph COMBO MONITOR CONTINUOUS WATER TEST AQUARIUM FISH TANK

Tetra 6 in 1 Water Test Kit Aquarium - Nitrate PH KH Nitrite Tropical Fish Tank

Tetra 6in1 Aquarium Test Kit Tropical PH KH GH NO2 NO3 Chlorine 25 Strips

JBL PROSCAN WATER ANALYSIS KIT & RECHARGE REFILL TEST SMARTPHONE AQUARIUM TANK

Tetra Nitrite Test Kit for Ponds and Aquariums

Colombo Aqua Test Lab Professional Koi Pond Fresh Marine Sea Water Test Kit Sale

NT Labs Test Kit Aquarium Fish Tank Tropical Freshwater Lab Testing pH & More

NT LABS AQUARIUM LAB MULTI-TEST MASTER KIT WATER TESTING TROPICAL FISH TANK

100Pcs 7-in-1 AQUARIUM PH TEST KIT TEST STRIPS TROPICAL FISH TANK WATER TESTER

JBL ProAquaTest Lab Water Test Case

NT Labs Water Treatment Mini Test Kit for Fish & Aquarium Freshwater 120 Tests

API Test Kits Aquarium Water Testing pH NO2 NO3 Liquid Strips Master Fresh Marin

Heavy Metals Water Test Kit - Test for Heavy Metals at home or office

API Reef Master Test Kit Tests Calcium Carbonate Hardness Phosphate & Nitrite

Seachem Alert Combo pH & Ammonia Monitor 6 month/1 year Water Test Fish Tank

15 Minute Water Bacteria Test Detects: Coliform and Non-Coliform Bacteria

Interpet Bioactive Tapsafe Aquarium Water Dechlorinator & 50 ml (Pack of 1) New

SimplexHealth Drinking Water Free Chlorine Test Kit 0-300ppm (10 Strips)

100pcs 16 IN 1 Drinking Water Test Strips For Home Well Water Quality Testing

RIKKA GH KH pH Freshwater Aquarium Water Test Kit Up to 50 tests. NEW!!!

Nt Labs Aquarium Labs Testing Kits Tropical Cold Water Pond Fish Tank Multi Test

SEACHEM AMMONIA ALERT TEST KIT AMMONIA MONITOR MARINE FRESH AQUARIUM FISH TANK

Watersafe Drinking Water Test kit for Bacteria

SALIFERT PHOSPHATE PO4 PROFI TEST KIT MARINE REEF AQUARIUM FISH TANK

JBL Pro AquaTest Lab Freshwater Aquarium Kit Professional Fish Tank Aqua Test

Waterlife Ammonia Nh3/Nh4 Water Test 50 Kits Included

API MASTER TESTING KIT, AQUADIP TEST STRIPS PO4, GH&KH, 3d PrintHOLDER, aquarium

Precision Labs Phosphate Test Strips 0-100ppm (50 Strips)

7-in-1 & Ammonia Aquarium Test Strips, Water Testing Kit for Freshwater & Marine

BLAGDON WATER QUALITY POND DIP TEST KIT 60 TESTS Ph Ammonia Nitrite Nitate GH KH

API pH Test Kit for Freshwater Aquarium 150-Test Kit For Fresh Water

Tetra Test Kits Water Testing Sets for Fish Tanks Ponds pH KH GH NO2 NO3 O2

eSHa Aquarium Fish Tank Treatments Gastopex Heximata Gdex NDX 2000 Exit Optima

API Carbonate Hardness Test Kit for Freshwater & Saltwater Aquarium Test Kit

API Freshwater pH Test & Adjuster Kit Deluxe For Fresh Water

SimplexHealth Drinking Water Bacteria Test Kit Home Use inc detects E.coli

SALIFERT NITRATE NO3 PROFI TEST KIT MARINE REEF FISH TANK AQUARIUM

JBL PROSCAN RECHARGE WATER-ANALYSIS STRIPS FOR SMARTPHONE APP AQUARIUM FISH TANK

RIKKA 3 in 1: NO3 PO4 Fe Freshwater Aquarium Test Kit NEW!!!

100x 5 In 1 Aquarium Test Strips Kit Fish Tank Pond Water Fresh PH Tester BT*_^

Best selling

NT Labs Aquarium Lab Multi-test Kit - NTLABS

API Freshwater Master Test Kit pH No2 Tropical Fish Tank

API GH & KH TEST KIT Freshwater Aquarium Water Test Kit

API Phosphate Test Kit - Tropical Coldwater and Marines Fish Tank Aquarium

Tétra 6 in 1 Tropical Ph KH GH No2 No3 Cl3 Aquarium Water Test Kit

API 55898 5 in 1 Aquarium Test Strips - Pack of 25

Seachem Ammonia Alert for Freshwater and Marine Water

API KH Test Kit Carbonate Hardness Fish Tank Aquarium Tropical Coldwater & Pond

Top-rated

API Freshwater Master Test Kit pH No2 Tropical Fish Tank

NT Labs Aquarium Lab Multi-test Kit - NTLABS

Tetra Test 6in1 Strips Aquarium to Test 6 Essential Water Quality Parameters - Pack of 25

API 55898 5 in 1 Aquarium Test Strips - Pack of 25

NT Labs Aquarium Water pH Test Kit - 120 Count

JBL ProScan Recharge Aquarium Test Strips Refill - 24 Count (2542100)

API Phosphate Test Kit - Tropical Coldwater and Marines Fish Tank Aquarium