Aquarium Test Kits

2,709 results

Total Water Hardness Test Strips Kit x 10 Drinking Water Softener Testing Setup
Brand new · SimplexHealth
(83)
£3.99
Free postage
7,389 sold
Hanna Master Test Kit + Salinity Tester Bundle
Pre-owned
£312.68
or Best Offer
£4.48 P&P
6-in-1 FISH TANK TEST STRIPS MARINE TROPICAL AQUARIUM TEST STRIPS 100pcs IN-326
Brand new
£7.95
Free postage
Click & Collect
462 sold
7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW
Brand new · Unbranded
£6.29 to £8.19
Free postage
NT LABS POND LAB 200 MULTI TEST KIT MASTER PONDLAB WATER SET PH GH KH NO2 NO4
Brand new · NT Labs
(116)
£25.99
Free postage
Click & Collect
2,777 sold
PH Tester Tropical Aquarium Cold Water Fish Tank Testing Kit 80 Strips Universal
Brand new · Unbranded
(138)
£1.89
Free postage
8,289 sold
API FRESH WATER MASTER TEST KIT 800 TESTS AQUARIUM FISH TANK pH Nitrate/Nitrite
Brand new · API
£29.95
Free postage
Click & Collect
3,776 sold
API Test Kits Ammonia Nitrate Nitrite pH KH GH Phosphate Freshwater Marine
Brand new · API
(4)
£8.49 to £19.99
Free postage
Click & Collect
NT LABS AQUARIUM LAB MULTI-TEST MASTER KIT WATER TESTING TROPICAL FISH TANK
Brand new
(230)
£25.99
Free postage
Click & Collect
7,281 sold
AQUAVERITY 7 IN 1 POND TEST STRIPS QUICK & EASY TO USE IN GARDEN PONDS 50 STRIPS
Brand new
£9.95
Free postage
Click & Collect
117 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
1,223 sold
API 500 Pond Master Test Kit Tests pH, Ammonia, Nitraite & Phosphate
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(72)
£24.79
(£24.79/Unit)
Free postage
Click & Collect
451 sold
NT Labs Test Reagent Bottle Replacement Spare pH Nitrite GH Ammonia Fish Tank
Brand new
£3.19 to £29.99
Free postage
334 sold
Envii Pond Test Strips - Quick & Easy Test Kit Contains 25 Test Strips
Brand new
(9)
£11.95
Free postage
Click & Collect
716 sold
Watersafe Drinking Water Test Kit for Well or Tap Water WS-425C
Brand new
£29.99
Free postage
Click & Collect
839 sold
SALIFERT TEST KIT SET MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK KH MG CA
Brand new
£34.95
Free postage
Click & Collect
241 sold
Seneye Slide Packs pH/NH3 Ammonia Replacement 3/6/12 Months Fish Tank Pond Reef
Brand new
£31.99 to £114.95
Free postage
Click & Collect
8 watching
API 5ml Test Tubes Spare for Test Kit with Caps Replacement Aquarium Fish Tank
Brand new · API
(2)
£4.05 to £21.80
Free postage
84 sold
SALIFERT PROFI TEST KIT RANGE MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK
Brand new · Salifert
(31)
£10.50 to £34.95
Free postage
Click & Collect
110 sold
Watersafe Drinking Water Test kit for Bacteria
Brand new
(2)
£12.99
Free postage
Click & Collect
370 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
151 sold
API Saltwater Master Test Kit for Saltwater Aquarium 550-Test Kit
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(69)
£24.49
(£24.49/Unit)
Free postage
Click & Collect
273 sold
NT LABS TEST KITS TROPICAL/COLDWATER AQUARIUM LAB WATER TESTING FISH TANK
Brand new
£7.95 to £25.99
Free postage
Click & Collect
240 sold
TETRA POND STRIPS 6 IN 1 QUICK TEST KIT KOI FISH WATER QUALITY QUICK TETRAPOND
Brand new · Tétra
(117)
£12.99
Free postage
Click & Collect
2,259 sold
JBL CombiSet Test Kit For Freshwater Aquarium- pH, KH, CO2, NO2, NO3 + NH4
Brand new · JBL
(4)
£39.95
Free postage
Click & Collect
203 sold
7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit 2025
Brand new · Unbranded
£6.19 to £6.99
Free postage
SEACHEM AMMONIA ALERT TEST KIT AMMONIA MONITOR MARINE FRESH AQUARIUM FISH TANK
Brand new · Seachem
(98)
£11.05
Free postage
Click & Collect
4,156 sold
Alkaline pH Test Litmus Paper Strips 0 - 14 for Water Urine & Saliva 5M Roll
Brand new · Simplex Health
(13)
£4.99
Free postage
1,104 sold
SALIFERT TEST KIT SET MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK NH3 NO2 NO3
Brand new
£28.99
Free postage
Click & Collect
150 sold
NT Labs Marine Lab Multi Test Kit Master Reef NH3 NO2 NO3 pH Aquarium Fish Tank
Brand new
£27.45
Free postage
Click & Collect
16 In 1 Drinking Water Test Kit Strips Home Water Quality Test For Tap Easy Use
Brand new · Fluval
£8.27 to £10.79
Free postage
SALIFERT TEST KIT SET MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK FULL SET
Brand new · Salifert
(15)
£74.99
Free postage
Click & Collect
168 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
1,833 sold
API GH & KH WATER TEST KIT FISH TANK TROPICAL POND GENERAL CARBONATE HARDNESS
Brand new · API
(7)
£11.99
Free postage
Click & Collect
1,432 sold
API POND MASTER TEST KIT GOLDFISH KOI TESTKIT POND CARE WATER FISH HEALTH GARDEN
Brand new · API
(72)
£25.99
Free postage
Click & Collect
606 sold
Water Hardness Test Strips in FOIL x 5 Drinking Water Softener Testing Setup
Brand new
£3.99
Free postage
173 sold
API Ammonia Test Kit for Freshwater & Saltwater Aquarium 130-Test Kit
Fast & Free Delivery On All Items | Multibuy Savings
Brand new · API
(56)
£11.99
(£11.99/Unit)
Free postage
Click & Collect
424 sold
Hanna 35ppt Salinity Calibration Sachet x1 (20ml)
Brand new
£3.99
Free postage
54 sold
7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW
Brand new · Unbranded
£6.85 to £8.50
Free postage
7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW
Brand new · Unbranded
£6.21 to £8.15
Free postage
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
SimplexHealth Drinking Water EASY Bacteria Test Kit Home (2 Tests)
Brand new
£15.99
Free postage
Click & Collect
210 sold
Water Hardness Test Strips Kit (50 STRIPS POUCH) Drinking Water Softener Testing
Brand new
£9.99
Free postage
Click & Collect
434 sold
Tetra Test Kit Ammonia - Aquarium Ammonia Test Kit
Brand new · Tétra
(5)
£6.99
Free postage
Click & Collect
Only 1 left.
TMC Salifert Profi Test Kit Saltwater Marine Reef Water Testing Coral Fish Tank
Brand new · Salifert
(9)
£10.09 to £13.40
Free postage
Click & Collect
67 sold
Aquarium Test Tube Holder Rack Tropical / Pond Fish NT Labs Kit Stand Station
Brand new
£11.75
Free postage
Click & Collect
29 sold
Salifert Test Kit Bundle Marine Aquarium
Pre-owned
£16.13
£3.38 P&P
Salt Tester Koi Medic Digital Salt Tester Koi Pond Fish Water Resistant BJsKoi
Brand new
(13)
£114.99
£4.99 P&P
Click & Collect
Only 1 left.
NT Labs Marine Lab Multi Test Kit Reef NH3 NO2 NO3 pH KH Mg Ca PO4 Aquarium Tank
Brand new
£25.45 to £55.95
Free postage
Click & Collect
74 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
32 sold
7 in1 Aquarium Test Kit, Fish Tank Water Testing (10-200x Tester Strips) Bulk UK
Bulk Value Option - UK Based - Free P&P RM48
Brand new
£12.95
Free postage
Click & Collect
58 sold
Colombo AquaTest Test Lab Professional Pond/Fresh/Marine Test Kit Advanced Fish
Brand new · Colombo
(38)
£39.95
Free postage
Click & Collect
426 sold
Hanna Marine Master kit BAND NEW HI97115UC
Brand new · Hanna
£312.91
£75.84 P&P
34 watching
Nt Labs Aquarium Labs Testing Kits Tropical Cold Water Pond Fish Tank Multi Test
Brand new
(230)
£8.95 to £26.95
Free postage
Click & Collect
75 sold
Reef Zlements ICP Saltwater Test Kits Send Off Specialist Testing Aquarium Fish
Brand new
£28.99 to £39.99
Free postage
Click & Collect
46 sold
NT LABS POND LAB 200 MULTI TEST KIT MASTER
Brand new
£24.49
Free postage
Click & Collect
Only 3 left
API 5 in 1 AQUARIUM WATER TEST KIT DIP 25 STRIPS FRESHWATER SALTWATER FISH TANK
Brand new · API
(46)
£5.99 to £12.99
Free postage
Click & Collect
360 sold
REEF ZLEMENTS ICP TEST ***UK lab testing super fast results ****
Brand new
£28.85
Free postage
Click & Collect
95 sold
100pcs 16 IN 1 Drinking Water Test Strips For Home Well Water Quality Testing
Brand new · Unbranded
£14.98
Free postage
RIKKA 3 in 1: NO3 PO4 Fe Freshwater Aquarium Test Kit NEW!!!
Brand new
£10.78
Free postage

Best selling

See all

NT Labs Pondlab 200 Pond Water Parameter Test Kit (026322)
(116)
£25.99 New
NT Labs Aquarium Lab Multi-test Kit - NTLABS
(221)
£24.99 New
API Freshwater Master Test Kit pH No2 Tropical Fish Tank
(243)
£29.99 New
API GH & KH TEST KIT Freshwater Aquarium Water Test Kit
(7)
£11.49 New
Salifert Phosphate Test Kit Phosphate 60 Tests For Aquarium
(9)
£11.75 New
Salifert MG Profi Test Kit Magnesium 50 Tests Marine Aquarium Fish Tank
(31)
£11.79 New
£9.56 Used
API 5 in 1 Aquarium Test Kit - 4 Pack
(46)
£4.45 New
API 164M Pond Care Master Test Kit
(72)
£24.79 New

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
(230)

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
API LR8600 Ammonia Test Kit for Aquarium - Pack of 130 Tests
(56)

100% agree - Would recommend
£11.95 New
Colombo Testlab Pond Test Kit
(38)

88% agree - Would recommend
£39.95 New
API Phosphate Test Kit - Tropical Coldwater and Marines Fish Tank Aquarium
(27)

96% agree - Would recommend
£11.90 New
£10.78 Used

Brand

Water Type

Aquarium Test Kits

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2,709 results

Total Water Hardness Test Strips Kit x 10 Drinking Water Softener Testing Setup

Hanna Master Test Kit + Salinity Tester Bundle

6-in-1 FISH TANK TEST STRIPS MARINE TROPICAL AQUARIUM TEST STRIPS 100pcs IN-326

7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW

NT LABS POND LAB 200 MULTI TEST KIT MASTER PONDLAB WATER SET PH GH KH NO2 NO4

PH Tester Tropical Aquarium Cold Water Fish Tank Testing Kit 80 Strips Universal

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

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

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

AQUAVERITY 7 IN 1 POND TEST STRIPS QUICK & EASY TO USE IN GARDEN PONDS 50 STRIPS

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

API 500 Pond Master Test Kit Tests pH, Ammonia, Nitraite & Phosphate

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

Envii Pond Test Strips - Quick & Easy Test Kit Contains 25 Test Strips

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

SALIFERT TEST KIT SET MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK KH MG CA

Seneye Slide Packs pH/NH3 Ammonia Replacement 3/6/12 Months Fish Tank Pond Reef

API 5ml Test Tubes Spare for Test Kit with Caps Replacement Aquarium Fish Tank

SALIFERT PROFI TEST KIT RANGE MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK

Watersafe Drinking Water Test kit for Bacteria

API Freshwaster And Saltwater Aquarium Test Kits

API Saltwater Master Test Kit for Saltwater Aquarium 550-Test Kit

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

TETRA POND STRIPS 6 IN 1 QUICK TEST KIT KOI FISH WATER QUALITY QUICK TETRAPOND

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

7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit 2025

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

Alkaline pH Test Litmus Paper Strips 0 - 14 for Water Urine & Saliva 5M Roll

SALIFERT TEST KIT SET MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK NH3 NO2 NO3

NT Labs Marine Lab Multi Test Kit Master Reef NH3 NO2 NO3 pH Aquarium Fish Tank

16 In 1 Drinking Water Test Kit Strips Home Water Quality Test For Tap Easy Use

SALIFERT TEST KIT SET MARINE REEF SALTWATER CORAL AQUARIUM FISH TANK FULL SET

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

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

API POND MASTER TEST KIT GOLDFISH KOI TESTKIT POND CARE WATER FISH HEALTH GARDEN

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

API Ammonia Test Kit for Freshwater & Saltwater Aquarium 130-Test Kit

Hanna 35ppt Salinity Calibration Sachet x1 (20ml)

7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW

7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW

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

SimplexHealth Drinking Water EASY Bacteria Test Kit Home (2 Tests)

Water Hardness Test Strips Kit (50 STRIPS POUCH) Drinking Water Softener Testing

Tetra Test Kit Ammonia - Aquarium Ammonia Test Kit

TMC Salifert Profi Test Kit Saltwater Marine Reef Water Testing Coral Fish Tank

Aquarium Test Tube Holder Rack Tropical / Pond Fish NT Labs Kit Stand Station

Salifert Test Kit Bundle Marine Aquarium

Salt Tester Koi Medic Digital Salt Tester Koi Pond Fish Water Resistant BJsKoi

NT Labs Marine Lab Multi Test Kit Reef NH3 NO2 NO3 pH KH Mg Ca PO4 Aquarium Tank

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

7 in1 Aquarium Test Kit, Fish Tank Water Testing (10-200x Tester Strips) Bulk UK

Colombo AquaTest Test Lab Professional Pond/Fresh/Marine Test Kit Advanced Fish

Hanna Marine Master kit BAND NEW HI97115UC

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

Reef Zlements ICP Saltwater Test Kits Send Off Specialist Testing Aquarium Fish

NT LABS POND LAB 200 MULTI TEST KIT MASTER

API 5 in 1 AQUARIUM WATER TEST KIT DIP 25 STRIPS FRESHWATER SALTWATER FISH TANK

REEF ZLEMENTS ICP TEST ***UK lab testing super fast results ****

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

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

Best selling

NT Labs Pondlab 200 Pond Water Parameter Test Kit (026322)

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

Salifert Phosphate Test Kit Phosphate 60 Tests For Aquarium

Salifert MG Profi Test Kit Magnesium 50 Tests Marine Aquarium Fish Tank

API 5 in 1 Aquarium Test Kit - 4 Pack

API 164M Pond Care Master Test Kit

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

API LR8600 Ammonia Test Kit for Aquarium - Pack of 130 Tests

Colombo Testlab Pond Test Kit

REEF ZLEMENTS ICP TEST *UK lab testing super fast results **