Pond Aquarium Water Tests & Treatment

1,047 results

Cloverleaf Blanket Answer Blanketweed Pond Treatment Clear String Algae Water
Brand new · Clover Leaf
£12.99 to £59.99
Free postage
Click & Collect
249 sold
Envii Nitrate Klear – Natural Pond Nitrate Remover Treatment Safe For All Fish
Brand new
£13.95 to £19.95
Free postage
Click & Collect
122 sold
Blagdon All In One Fish Aid Koi Pond Disease Treatment Parasites Fungus Bacteria
Brand new · Blagdon
(49)
£21.50
Free postage
Click & Collect
2,510 sold
UK Koi Supplies Lacto Bacteria 1L
Brand new
£22.99
Free postage
Click & Collect
Blagdon Green Away Pond Algae Cloudy Water Treatment
Brand new · Blagdon
£9.99 to £18.20
Free postage
Click & Collect
941 sold
TAP No More Blanket Weed Pond String Algae Remover Treatment Blanketweed Fishi
Brand new
£9.45 to £72.95
Free postage
Click & Collect
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
2,721 sold
Blagdon Clean Pond Filter Pods Blanketweed Sludge Control Dechlorinator
Brand new · Blagdon
£14.65 to £64.45
Free postage
Click & Collect
Cloverleaf Sludge Answer Remove Pond Dirt in Koi Fish Ponds Good Bacteria
Brand new · Clover Leaf
(13)
£5.95 to £22.65
Free postage
Click & Collect
184 sold
Blagdon Anti Parasite Extra Strength Koi Pond Treatment White Spot Flukes Slime
Brand new · Blagdon
£8.99
Free postage
606 sold
WaterLife Algizin G Pond Algae Green Cloudy Water Control Clears Fast Effective
Brand new · Waterlife
£6.99 to £14.99
Free postage
Click & Collect
38 sold
Envii Pond Test Strips - Quick & Easy Test Kit Contains 25 Test Strips
Brand new
(8)
£11.95
Free postage
Click & Collect
681 sold
NT Labs Anti-Parasite & Fungus Fungal Infection Treatment Sick Fish Koi Goldfish
Brand new · NT Labs
(16)
£9.95 to £20.99
Free postage
Click & Collect
135 sold
Tetra Pond Aquasafe Water Conditioner Dechlorinator Treatment Fish Koi Clarity
Brand new · Tetra Pond
£20.49
Free postage
Click & Collect
77 sold
Nishikoi Clearwaters Blanketweed Treatment String Filament Algae Treats 10000L
Brand new
£16.99
Free postage
Click & Collect
71 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
Bermuda Tap Water Conditioner Pond Chlorine Treatment Aqua Safe Dechlorinator
Brand new · Bermuda
(17)
£8.49 to £13.99
Free postage
Click & Collect
895 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
75 sold
Evolution Aqua Pure Pond Bomb Balls Live Filter Bacteria Starter 500ml ShortDate
Brand new · Evolution Aqua
(59)
£9.95 to £32.45
Free postage
Click & Collect
565 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
421 sold
Bermuda Blanketweed Pond Water Treatment Answer Clear String Algae Problems
Brand new · Bermuda
(4)
£8.95 to £34.95
Free postage
Click & Collect
128 sold
NT Labs Acriflavin Pond Treatment Illness Koi Goldfish Fin Rot Ulcer Bacteria
Brand new · NT Labs
(3)
£11.90 to £37.95
Free postage
Click & Collect
NT Labs Anti-Ulcer, Finrot & Flukes Ill Fish Sick Koi Treatment Parasite
Brand new · NT Labs
(12)
£9.60 to £21.20
Free postage
Click & Collect
99 sold
Bermuda Greenwater Pond Algae Treatment Clears Cloudy Green Water
Brand new
£8.95 to £11.70
Free postage
Click & Collect
164 sold
NT Labs F-M-G Mixture Formalin Malachite Pond Treatment Sick Fish Koi Goldfish
Brand new · NT Labs
(16)
£13.99 to £19.99
Free postage
Click & Collect
42 sold
NT Labs Foam Control Pond Treatment Foam Surface Protein Buildup Pond Problems
Brand new · NT Labs
(15)
£13.90 to £19.85
Free postage
Click & Collect
Tetra AlgoFin Pond Blanketweed String Algae Treatment Koi Gold Fish Ponds Thread
Brand new · Tétra
£10.75 to £22.95
Free postage
Click & Collect
156 sold
Vetark Fluke Solve Plus 100g Praziquantel Fish Skin Gill Parasite Fluke Med.
Brand new · Vetark
(31)
£49.79
Free postage
Click & Collect
617 sold
UK Koi Supplies Filter Bacteria Kickstarter 1L
Brand new
£25.99
Free postage
Click & Collect
Blagdon Pond Balance Treatment Blanketweed String Filament Algae Koi Fish Pond
Brand new · Blagdon
(26)
£11.80 to £34.75
Free postage
Click & Collect
425 sold
EVOLUTION AQUA DETOX DECHLORINATOR CARBON GARDEN POND KOI FISH IN LINE FILTER
Brand new · Evolution Aqua
(7)
£84.95 to £124.95
Free postage
Click & Collect
316 sold
Blagdon Pond Fresh Start Dehlorinator Tap Safe Water Conditioner Fish Dechlor
Brand new · Blagdon
(42)
£9.70 to £18.99
Free postage
Click & Collect
790 sold
TAP BARLEY STRAW CLEAR POND WATER 100% ORGANIC ALGAE CONTROL KOI FISH
Brand new
£8.95 to £17.99
Free postage
Click & Collect
182 sold
TAP No More Chlorine Pond Tap Safe Water Koi Fish Ponds Dechlorinator
Brand new
£7.99 to £11.99
Free postage
Click & Collect
37 sold
TAP Pond Doctor Dechlorinator Makes Tap Safe Water Treatment in Koi Fish Ponds
Brand new · Tap Pond Doctor
(9)
£12.95
Free postage
Click & Collect
151 sold
Kusuri Klear 500ml, 1 Litre, 5 Litre
Brand new · Kusuri
£18.99 to £114.95
Free postage
Click & Collect
Cloverleaf Blanket & Sludge Answer Blanketweed Pond Weed Water Treatment Bundle
Brand new
£19.99 to £105.99
Free postage
Click & Collect
Blagdon Anti Fungus & Bacteria Fish Pond Treatment 250ml 500ml 1000ml Interpet
Brand new · Blagdon
(24)
£18.99
Free postage
Click & Collect
346 sold
BactoPlus Ohmizu Koi Clay Pond Minerals Reproduces Japanese Niagata Water 2.5kg
Brand new
£28.99
Free postage
Click & Collect
12 watching
7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW
Brand new · Unbranded
£6.25 to £8.12
Free postage
COLOMBO AQUATEST TEST LAB PROFESSIONAL POND FRESH SEA WATER MARINE TEST KIT FISH
Brand new · Colombo
(38)
£38.95
Free postage
Click & Collect
53 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
TAP No More Pond Sludge Remove Dirt Water Treatment Clean Koi Fish Ponds
Brand new
(1)
£7.99 to £29.99
Free postage
Click & Collect
50 sold
NT Labs Pond Mature Live Filter Bacteria Startup Healthy Clear Water Koi Fish
Brand new · NT Labs
(4)
£9.90 to £13.95
Free postage
Click & Collect
112 sold
Pond Friend Water Dye Algae & Blanketweed Control For Water Features & Ponds
Brand new
£9.90
Free postage
Click & Collect
41 sold
NT Labs Pond Blanketweed & Algae Control Green Problem Pea Soup Water Treatment
Brand new · NT Labs
(5)
£15.90 to £19.75
Free postage
Click & Collect
90 sold
NT Labs Pond Clear Green & Cloudy Pond Water Cleans Removes Pea Soup Magiclear
Brand new · NT Labs
(30)
£9.90 to £18.95
Free postage
Click & Collect
29 sold
Pond Koi Treatment Waterlife Acriflavine Bactericide Fin Rot Wounds Ulcers 500ml
Brand new · Waterlife
£13.99
Free postage
Click & Collect
TAP Pond Filter Aid Good Bacteria Booster Start for Biological Filtration Health
Brand new
(1)
£6.95 to £12.95
Free postage
Click & Collect
Vanquish Blue Pond Dye Water Colour Greenwater Treatment Algae Control
Brand new
£9.44 to £18.99
Free postage
Click & Collect
Vanquish Pond Dye Water Colour Greenwater Treatment Algae Blanketweed Control
Brand new
£8.99 to £16.99
Free postage
Click & Collect
Evolution Aqua Stop Blanketweed Koi Fish Pond Blanket Weed Green String Algae
Brand new · Evolution Aqua
(9)
£10.31 to £46.95
Free postage
Click & Collect
NT LABS TEST KITS TROPICAL/COLDWATER AQUARIUM LAB WATER TESTING FISH TANK
Brand new
(6)
£7.95 to £25.99
Free postage
Click & Collect
417 sold
Blagdon Pond Ammonia Remover 500ml Treats 4546L
Brand new
(20)
£14.95
Free postage
Click & Collect
32 sold
Bermuda Pond Sludge Treatment Reduce Debris Silt Dead Algae Filter Maintenance
Brand new
£8.35 to £13.99
Free postage
Click & Collect
54 sold
Koi Doc Lacto Acid Bacteria 1 Litre and 5 Litre
Brand new
£19.95 to £41.95
Free postage
22 sold
Cloverleaf Absolute Fluke 2 x 50g Targeted Fish Medication Parasite Treatment.
Brand new
£17.89
Free postage
8 watching
NT Labs Pond Sludge Remover Waste Bacteria Buildup Muck Dirty Dirt Grime Problem
Brand new · NT Labs
(3)
£8.95 to £18.95
Free postage
Click & Collect
7 in 1 PH Test Fish Tank Water Tropical Aquarium Pond Water Test Strips Kit NEW
Brand new · Unbranded
£6.21 to £8.12
Free postage
Evolution Aqua Pure+ Filter Start Gel 1L/2.5L Live Bacteria New Pond Filtration
Brand new · Evolution Aqua
(17)
£21.45 to £38.99
Free postage
Click & Collect
353 sold

Best selling

See all

NT Labs Pondlab 200 Pond Water Parameter Test Kit (026322)
(116)
£25.99 New
NT Labs Acriflavin Koi Care
(10)
£32.99 New
Tetra Crystal Water Treatment - 250ml
(27)
£9.42 New
Vetark Fluke-Solve Aquarium Treatment - 100g
(31)
£44.30 New
API 164M Pond Care Master Test Kit
(72)
£24.79 New
NT Labs Aquarium Lab Ph 6-9 Test Kit 40 Tests
(3)
£8.25 New
Tetra Pond Test Strip 6 in 1 (T6912)
£12.95 New
NT Labs Nitrate Test Kit Tropical Coldwater Pond Fish Tank Aquarium No3 Testing
£8.25 New

Top-rated

See all

NT Labs Pondlab 200 Pond Water Parameter Test Kit (026322)
(116)

98% agree - Would recommend
£25.99 New
API 164M Pond Care Master Test Kit
(72)

100% agree - Would recommend
£24.79 New
Colombo Testlab Pond Test Kit
(38)

88% agree - Would recommend
£38.95 New
Vetark Fluke-Solve Aquarium Treatment - 100g
(31)

100% agree - Would recommend
£44.30 New
Tetra MediFin Pond Treatment - 500 ml
(23)

100% agree - Would recommend
£14.99 New
Tétra T392 AlgoFin Water Treatment Kit - 1L
(21)

100% agree - Would recommend
£21.92 New
Kusuri Powder Gold Water Treatment - 1kg
(19)

100% agree - Would recommend
£35.09 New
Tetra Pond Aquasafe Water Treatment - 500ml
(19)

100% agree - Would recommend
£14.32 New

Type

Test/Treatment Parameter

Pond Aquarium Water Tests & Treatment

Shop by category

1,047 results

Cloverleaf Blanket Answer Blanketweed Pond Treatment Clear String Algae Water

Envii Nitrate Klear – Natural Pond Nitrate Remover Treatment Safe For All Fish

Blagdon All In One Fish Aid Koi Pond Disease Treatment Parasites Fungus Bacteria

UK Koi Supplies Lacto Bacteria 1L

Blagdon Green Away Pond Algae Cloudy Water Treatment

TAP No More Blanket Weed Pond String Algae Remover Treatment Blanketweed Fishi

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

Blagdon Clean Pond Filter Pods Blanketweed Sludge Control Dechlorinator

Cloverleaf Sludge Answer Remove Pond Dirt in Koi Fish Ponds Good Bacteria

Blagdon Anti Parasite Extra Strength Koi Pond Treatment White Spot Flukes Slime

WaterLife Algizin G Pond Algae Green Cloudy Water Control Clears Fast Effective

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

NT Labs Anti-Parasite & Fungus Fungal Infection Treatment Sick Fish Koi Goldfish

Tetra Pond Aquasafe Water Conditioner Dechlorinator Treatment Fish Koi Clarity

Nishikoi Clearwaters Blanketweed Treatment String Filament Algae Treats 10000L

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

Bermuda Tap Water Conditioner Pond Chlorine Treatment Aqua Safe Dechlorinator

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

Evolution Aqua Pure Pond Bomb Balls Live Filter Bacteria Starter 500ml ShortDate

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

Bermuda Blanketweed Pond Water Treatment Answer Clear String Algae Problems

NT Labs Acriflavin Pond Treatment Illness Koi Goldfish Fin Rot Ulcer Bacteria

NT Labs Anti-Ulcer, Finrot & Flukes Ill Fish Sick Koi Treatment Parasite

Bermuda Greenwater Pond Algae Treatment Clears Cloudy Green Water

NT Labs F-M-G Mixture Formalin Malachite Pond Treatment Sick Fish Koi Goldfish

NT Labs Foam Control Pond Treatment Foam Surface Protein Buildup Pond Problems

Tetra AlgoFin Pond Blanketweed String Algae Treatment Koi Gold Fish Ponds Thread

Vetark Fluke Solve Plus 100g Praziquantel Fish Skin Gill Parasite Fluke Med.

UK Koi Supplies Filter Bacteria Kickstarter 1L

Blagdon Pond Balance Treatment Blanketweed String Filament Algae Koi Fish Pond

EVOLUTION AQUA DETOX DECHLORINATOR CARBON GARDEN POND KOI FISH IN LINE FILTER

Blagdon Pond Fresh Start Dehlorinator Tap Safe Water Conditioner Fish Dechlor

TAP BARLEY STRAW CLEAR POND WATER 100% ORGANIC ALGAE CONTROL KOI FISH

TAP No More Chlorine Pond Tap Safe Water Koi Fish Ponds Dechlorinator

TAP Pond Doctor Dechlorinator Makes Tap Safe Water Treatment in Koi Fish Ponds

Kusuri Klear 500ml, 1 Litre, 5 Litre

Cloverleaf Blanket & Sludge Answer Blanketweed Pond Weed Water Treatment Bundle

Blagdon Anti Fungus & Bacteria Fish Pond Treatment 250ml 500ml 1000ml Interpet

BactoPlus Ohmizu Koi Clay Pond Minerals Reproduces Japanese Niagata Water 2.5kg

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

COLOMBO AQUATEST TEST LAB PROFESSIONAL POND FRESH SEA WATER MARINE TEST KIT FISH

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

TAP No More Pond Sludge Remove Dirt Water Treatment Clean Koi Fish Ponds

NT Labs Pond Mature Live Filter Bacteria Startup Healthy Clear Water Koi Fish

Pond Friend Water Dye Algae & Blanketweed Control For Water Features & Ponds

NT Labs Pond Blanketweed & Algae Control Green Problem Pea Soup Water Treatment

NT Labs Pond Clear Green & Cloudy Pond Water Cleans Removes Pea Soup Magiclear

Pond Koi Treatment Waterlife Acriflavine Bactericide Fin Rot Wounds Ulcers 500ml

TAP Pond Filter Aid Good Bacteria Booster Start for Biological Filtration Health

Vanquish Blue Pond Dye Water Colour Greenwater Treatment Algae Control

Vanquish Pond Dye Water Colour Greenwater Treatment Algae Blanketweed Control

Evolution Aqua Stop Blanketweed Koi Fish Pond Blanket Weed Green String Algae

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

Blagdon Pond Ammonia Remover 500ml Treats 4546L

Bermuda Pond Sludge Treatment Reduce Debris Silt Dead Algae Filter Maintenance

Koi Doc Lacto Acid Bacteria 1 Litre and 5 Litre

Cloverleaf Absolute Fluke 2 x 50g Targeted Fish Medication Parasite Treatment.

NT Labs Pond Sludge Remover Waste Bacteria Buildup Muck Dirty Dirt Grime Problem

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

Evolution Aqua Pure+ Filter Start Gel 1L/2.5L Live Bacteria New Pond Filtration

Best selling

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

NT Labs Acriflavin Koi Care

Tetra Crystal Water Treatment - 250ml

Vetark Fluke-Solve Aquarium Treatment - 100g

API 164M Pond Care Master Test Kit

NT Labs Aquarium Lab Ph 6-9 Test Kit 40 Tests

Tetra Pond Test Strip 6 in 1 (T6912)

NT Labs Nitrate Test Kit Tropical Coldwater Pond Fish Tank Aquarium No3 Testing

Top-rated

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

API 164M Pond Care Master Test Kit

Colombo Testlab Pond Test Kit

Vetark Fluke-Solve Aquarium Treatment - 100g

Tetra MediFin Pond Treatment - 500 ml

Tétra T392 AlgoFin Water Treatment Kit - 1L

Kusuri Powder Gold Water Treatment - 1kg