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Pond Water Treatments

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Hot
(250ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(250ml) Hydra Fountain Clear Fountain Cleaner
£13.15FREE Delivery
Eco Pond Water Cleaner | Easylife Group | 2 SachetsEco Pond Water Cleaner | Easylife Group | 2 Sachets
£12.99FREE Delivery
Hot
(60ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(60ml) Hydra Fountain Clear Fountain Cleaner
£9.45FREE Delivery
Hot
(500ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(500ml) Hydra Fountain Clear Fountain Cleaner
£20.85FREE Delivery
Hot
(1 Litre ) Hydra Fountain Clear Fountain CleanerMultiple Options Available(1 Litre ) Hydra Fountain Clear Fountain Cleaner
£32.95FREE Delivery
Hot
(5 Litre ) Hydra Fountain Clear Fountain CleanerMultiple Options Available(5 Litre ) Hydra Fountain Clear Fountain Cleaner
£92.35FREE Delivery
(5 Litres) EcoPond Eco-Friendly Barley-Bio Algae ControlMultiple Options Available(5 Litres) EcoPond Eco-Friendly Barley-Bio Algae Control
£43.69FREE Delivery
(2X1Kg upto 25,000L ) Hydra Quartz (Pond Blanket Weed Treatment)Multiple Options Available(2X1Kg upto 25,000L ) Hydra Quartz (Pond Blanket Weed Treatment)
£30.75FREE Delivery
(2x1 litre ) Hydra Fountain Clear Fountain CleanerMultiple Options Available(2x1 litre ) Hydra Fountain Clear Fountain Cleaner
£57.15FREE Delivery
(1Kg upto 12,500L ) Hydra Quartz (Pond Blanket Weed Treatment)Multiple Options Available(1Kg upto 12,500L ) Hydra Quartz (Pond Blanket Weed Treatment)
£16.45FREE Delivery
Sodium Thiosulphate 1KgSodium Thiosulphate 1Kg
£8.91FREE Delivery
(1Kg upto 20,000L ) Hydra ST703 (Clear Filamentous Algae)Multiple Options Available(1Kg upto 20,000L ) Hydra ST703 (Clear Filamentous Algae)
£16.45FREE Delivery
Hot
(1X25 Kg ) Hydra Lake Clear Commercial Blanket Weed TreatmentMultiple Options Available(1X25 Kg ) Hydra Lake Clear Commercial Blanket Weed Treatment
£188.43FREE Delivery
Tetra Pond Aquasafe Water Conditioner, 1 LitreTetra Pond Aquasafe Water Conditioner, 1 Litre
£21.99FREE Delivery
(4X1Kg upto 50,000L ) Hydra Quartz (Pond Blanket Weed Treatment)Multiple Options Available(4X1Kg upto 50,000L ) Hydra Quartz (Pond Blanket Weed Treatment)
£50.38FREE Delivery
Bermuda Sludge Bomb Treats Up To 20,000 Litres - Clears Water And Digests SludgeBermuda Sludge Bomb Treats Up To 20,000 Litres - Clears Water And Digests Sludge
£10.55FREE Delivery
Bermuda Pure Pond Water Clarifier 500ml (BER0801) - Ideal for Ponds up to 10,000 L, Natural Bacteria & Enzymes for Clearer WaterBermuda Pure Pond Water Clarifier 500ml (BER0801) - Ideal for Ponds up to 10,000 L, Natural Bacteria & Enzymes for Clearer Water
£10.99FREE Delivery
(2x250ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(2x250ml) Hydra Fountain Clear Fountain Cleaner
£24.15FREE Delivery
Blagdon Clean Pond Pods, Clears Blanket Weed, Reduces Filter Cleaning, Feeds Aquatic Plants, Eats Pond Sludge, Removes Chlorine, Makes Tap Water SafeBlagdon Clean Pond Pods, Clears Blanket Weed, Reduces Filter Cleaning, Feeds Aquatic Plants, Eats Pond Sludge, Removes Chlorine, Makes Tap Water Safe£14.68FREE Delivery
(6 Pods) Blagdon Clean Pond PodsMultiple Options Available(6 Pods) Blagdon Clean Pond Pods
£14.28FREE Delivery
(24 Pods) Blagdon Clean Pond PodsMultiple Options Available(24 Pods) Blagdon Clean Pond Pods
£62.68FREE Delivery
Water Purifier ,Horse Trough Water Filter ,Activated Carbon Livestock Water Purifier for Ponds,Fish,AquariumsWater Purifier ,Horse Trough Water Filter ,Activated Carbon Livestock Water Purifier for Ponds,Fish,Aquariums£10.72£17.6939% off!+£0.50 Delivery
(1000g) Cloverleaf Absolute Parasite Water TreatmentMultiple Options Available(1000g) Cloverleaf Absolute Parasite Water Treatment£49.12FREE Delivery
Hot
Evolution Aqua Pure Pond Gel Ball 500mlEvolution Aqua Pure Pond Gel Ball 500ml
£12.45FREE Delivery
Defenders Water Butt Treatment ? 500 ml, Safe & Natural Concentrated Formula, Treats Rainwater and Household Grey WaterDefenders Water Butt Treatment ? 500 ml, Safe & Natural Concentrated Formula, Treats Rainwater and Household Grey Water
£13.94FREE Delivery
Blagdon Large Fresh Start for PondsBlagdon Large Fresh Start for Ponds£23.45FREE Delivery
Clear Water Barley Straw Bag - Bags Agralan 2 Clears Ponds Pack Algae - water clear barley straw bags agralan 2 clears ponds pack algaeClear Water Barley Straw Bag - Bags Agralan 2 Clears Ponds Pack Algae - water clear barley straw bags agralan 2 clears ponds pack algae£7.45FREE Delivery
Hot
NT Labs Pond Magiclear 1 Litre - Clears Green & Cloudy Pond WaterNT Labs Pond Magiclear 1 Litre - Clears Green & Cloudy Pond Water
£18.92FREE Delivery
Aqua Source Blanketweed Resolve 2kgAqua Source Blanketweed Resolve 2kg
£46.93FREE Delivery
Blagdon Green Away Pond Water Treatment, Clears Green Water and Suspended Algae Particles, Natural, Plant Friendly, Safe for Fish, 250 ml, TreatsBlagdon Green Away Pond Water Treatment, Clears Green Water and Suspended Algae Particles, Natural, Plant Friendly, Safe for Fish, 250 ml, Treats
£12.69FREE Delivery
(5Kg upto 50,000L ) Hydra Crystal (Pond Green Water Treatment)Multiple Options Available(5Kg upto 50,000L ) Hydra Crystal (Pond Green Water Treatment)
£62.98FREE Delivery
(5Kg upto 62,500L ) Hydra Quartz (Pond Blanket Weed Treatment)Multiple Options Available(5Kg upto 62,500L ) Hydra Quartz (Pond Blanket Weed Treatment)
£62.98FREE Delivery
(800g) Cloverleaf Pre-Vent BlanketweedMultiple Options Available(800g) Cloverleaf Pre-Vent Blanketweed£22.99FREE Delivery
Blagdon Pond Algaway, Removes Blanketweed and String Algae, Pet & Wildlife Safe, Small, Treats 10,740L of Pond WaterBlagdon Pond Algaway, Removes Blanketweed and String Algae, Pet & Wildlife Safe, Small, Treats 10,740L of Pond Water£23.32FREE Delivery
Evolution Aqua Pure Sludge Bomb Pond Sludge Water TreatmentEvolution Aqua Pure Sludge Bomb Pond Sludge Water Treatment
£14.95FREE Delivery
Blagdon Clean Pond Pods, clears blanket weed, reduces filter cleaning, feeds aquatic plants, eats pond sludge, makes tapwater safe (pack of 12 pods)Blagdon Clean Pond Pods, clears blanket weed, reduces filter cleaning, feeds aquatic plants, eats pond sludge, makes tapwater safe (pack of 12 pods)
£21.51FREE Delivery
TAP Pond Algae Control Balls 280ml - Gel Ball Treatment for Crystal Clear, Healthy Pond Water (Safe for Fish)TAP Pond Algae Control Balls 280ml - Gel Ball Treatment for Crystal Clear, Healthy Pond Water (Safe for Fish)£9.95FREE Delivery
(1Kg upto 10,000L ) Hydra Crystal (Pond Green Water Treatment)Multiple Options Available(1Kg upto 10,000L ) Hydra Crystal (Pond Green Water Treatment)
£16.45FREE Delivery
Nishikoi Feature Kit (16 Tablets)Nishikoi Feature Kit (16 Tablets)
£10.99FREE Delivery
(250ml (upto 6,250L) ) Hydra Green Liquid DyeMultiple Options Available(250ml (upto 6,250L) ) Hydra Green Liquid Dye
£17.55FREE Delivery
Nishikoi Pond Clear Waters 1 Litre (1000ml)Nishikoi Pond Clear Waters 1 Litre (1000ml)
£20.99FREE Delivery
(2x500ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(2x500ml) Hydra Fountain Clear Fountain Cleaner
£35.15FREE Delivery
Evolution Aqua Pond Bomb & Sludge Bomb Duo Pack Water TreatmentEvolution Aqua Pond Bomb & Sludge Bomb Duo Pack Water Treatment£24.95FREE Delivery
(1 Litre) Cloverleaf Absolute Clear Water TreatmentMultiple Options Available(1 Litre) Cloverleaf Absolute Clear Water Treatment£23.99FREE Delivery
Bactoplus Ohmizu Clay Koi Pond Mineral Treatment 2.5L Clear Water & Healthy FishBactoplus Ohmizu Clay Koi Pond Mineral Treatment 2.5L Clear Water & Healthy Fish
£28.95FREE Delivery
Bermuda Pond Fungus & Bacteria Treatment, Treats Sick Fish Fin/Mouth Rot - 250mlBermuda Pond Fungus & Bacteria Treatment, Treats Sick Fish Fin/Mouth Rot - 250ml£6.99FREE Delivery
TAP No More Blanketweed Treatment, 500 gTAP No More Blanketweed Treatment, 500 g
£11.99FREE Delivery
(330ml) TAP Sparkle Water Feature CleanerMultiple Options Available(330ml) TAP Sparkle Water Feature Cleaner
£13.99FREE Delivery
Bladgon Fish Aid All in One Pond Fish Treatment, 250 mlBladgon Fish Aid All in One Pond Fish Treatment, 250 ml
£13.45FREE Delivery
Bladgon Sludge Buster Pond Water Treatment - 4 x 9g SachetBladgon Sludge Buster Pond Water Treatment - 4 x 9g Sachet
£15.95FREE Delivery
Aquascape AQS96060 1 gal Maintain Water Treatment for PondsAquascape AQS96060 1 gal Maintain Water Treatment for Ponds£104.39+£15.00 Delivery
(2X1Kg upto 40,000L ) Hydra ST703 (Clear Filamentous Algae)Multiple Options Available(2X1Kg upto 40,000L ) Hydra ST703 (Clear Filamentous Algae)
£30.75FREE Delivery
(3X1Kg upto 37,500L ) Hydra Quartz (Pond Blanket Weed Treatment)Multiple Options Available(3X1Kg upto 37,500L ) Hydra Quartz (Pond Blanket Weed Treatment)
£43.95FREE Delivery
Supa Pond Block Anti Algae (Pack of 6)Supa Pond Block Anti Algae (Pack of 6)£5.51FREE Delivery
(5L (upto 21,250L) ) Hydra Black Liquid DyeMultiple Options Available(5L (upto 21,250L) ) Hydra Black Liquid Dye
£90.70FREE Delivery
TAP PROFESSIONAL POND WIZARD CLEANING TREATMENT CLEAR HEALTHY FISH WATER FILTERTAP PROFESSIONAL POND WIZARD CLEANING TREATMENT CLEAR HEALTHY FISH WATER FILTER£14.99FREE Delivery
(500g) TAP No More Duckweed Pond Water Algae Treatment Duck Weed Garden Fish KoiMultiple Options Available(500g) TAP No More Duckweed Pond Water Algae Treatment Duck Weed Garden Fish Koi£11.95FREE Delivery
TAP No More Blanketweed Treatment 1kgTAP No More Blanketweed Treatment 1kg£17.99FREE Delivery
Blagdon Anti Parasite 1L - 6424: 5-Day Pond Treatment for White Spot, Slime Disease, Velvet & FlukesBlagdon Anti Parasite 1L - 6424: 5-Day Pond Treatment for White Spot, Slime Disease, Velvet & Flukes
£22.99FREE Delivery
Barley Straw Extract for Ponds NaturalBarley Straw Extract for Ponds Natural£14.99FREE Delivery

Our highest rated pond water treatments

NT Labs Buffer (KH) Up 5kgNT Labs Buffer (KH) Up 5kg
(1)I recently bought 5K of NT Labs Buffer (KH) from OnBuy for my 2200-gallon koi pond, and I must say it's an excellent product that exceeded my expectations. I was facing pH issues in my pond, which wou...
(1Kg upto 12,500L ) Hydra Quartz (Pond Blanket Weed Treatment)(1Kg upto 12,500L ) Hydra Quartz (Pond Blanket Weed Treatment)
(5)I have used this last year and found it worked well. My problem is the waterfall it get clogged. So i tend to turn off the pump remove as much as i can then sprinkle the powder on and cover to stop th...
(500ml) Hydra Fountain Clear Fountain Cleaner(500ml) Hydra Fountain Clear Fountain Cleaner
(44)Delivery of this cleaner was prompt and well packed. Having user tested the cleaner earlier, this was a restock and I used OnBuy this time as they were much cheaper, free delivery plus cash back. The...
(250ml) EcoPond Eco-Friendly Barley-Bio Algae Control(250ml) EcoPond Eco-Friendly Barley-Bio Algae Control
(3)Ordered this item, as pond getting green slightly. On arrival of this product. I read the instructions with the easy calculation of amount to size of pond water capacity. I then mixed and poured the r...
NT Labs Koi Care Chloramine T 50gNT Labs Koi Care Chloramine T 50g
(1)NT Labs stuff work. This Chloramine T is much more economical to use than other stuff for internal bacteria. Also use this instead of the aquarium stuff and adjust dosage. More bang for your bucks....
(1L Parasite, Ulcer & Whitespot) Pisces Banish Parasite Ulcer & Whitespot Pond Fish Treatment Koi Water Anti Rot Disease Medicine Remover(1L Parasite, Ulcer & Whitespot) Pisces Banish Parasite Ulcer & Whitespot Pond Fish Treatment Koi Water Anti Rot Disease Medicine Remover
(2)Great product. It cleared up a nasty outbreak of White Spot in my garden pond quickly. Easy to use, safe for all my fish, and reasonably priced. Highly recommend keeping a bottle on hand just in case!
Nishikoi Feature Kit (16 Tablets)Nishikoi Feature Kit (16 Tablets)
(6)These are fantastic for keeping the water clean in our fountain. They do an excellent job overnight. They fizz away till dissolved. Fast delivery too from Yorkshire Aquatics and Pets
Blagdon Clean Pond Pods 24-Pack 5-in-1 Water Treatment (2834): Clears blanket weed, sludge, feeds plants, safe for tap waterBlagdon Clean Pond Pods 24-Pack 5-in-1 Water Treatment (2834): Clears blanket weed, sludge, feeds plants, safe for tap water
(1)dose just what it says on the bucket
(5Kg upto 62,500L ) Hydra Quartz (Pond Blanket Weed Treatment)(5Kg upto 62,500L ) Hydra Quartz (Pond Blanket Weed Treatment)
(5)I bought this for what I thought was blanket weed. Now, according to Hydra, it's been identified as Algae, not Blanketweed....
Evolution Aqua Pure Pond BombEvolution Aqua Pure Pond Bomb
(2)I have been using this product for a couple of years now, usually during the warmest months and works very well after a few days, the water becomes more clear.
Evolution Aqua Pure Sludge Bomb Pond Sludge Water TreatmentEvolution Aqua Pure Sludge Bomb Pond Sludge Water Treatment
(1)I am still waiting for the sludge to clear. I have a 650 litre small pond. So hopefully it won't take too much longer. Its been 6 days now. So, I cannot comment how good or bad it is. I'll have to...
Banish Pond Green Water Treatment 250ml - Treats 5688 Litres - Safe for Fish & Plants - Code 18518Banish Pond Green Water Treatment 250ml - Treats 5688 Litres - Safe for Fish & Plants - Code 18518
(1)Only used the product once, still waiting for result, this makes it hard to review at the moment. However the service, price and delivery was very good.

Customers love our best-selling Pond Water Treatments

Hot
(250ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(250ml) Hydra Fountain Clear Fountain Cleaner
£13.15FREE Delivery
Hot
(60ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(60ml) Hydra Fountain Clear Fountain Cleaner
£9.45FREE Delivery
Bladgon Fish Aid All in One Pond Fish Treatment, 250 mlBladgon Fish Aid All in One Pond Fish Treatment, 250 ml
£13.45FREE Delivery
Hot
(500ml) Hydra Fountain Clear Fountain CleanerMultiple Options Available(500ml) Hydra Fountain Clear Fountain Cleaner
£20.85FREE Delivery
Tetra Pond Aquasafe Water Conditioner, 1 LitreTetra Pond Aquasafe Water Conditioner, 1 Litre
£21.99FREE Delivery
Nishikoi Feature Kit (16 Tablets)Nishikoi Feature Kit (16 Tablets)
£10.99FREE Delivery

Popular Brands in Pond Water Treatments

VidaXL
Bestway
JBL
Tetra
Shark
Beaphar
Hozelock
SuperFish
ClearWater
Evolution Aqua
La Hacienda
Blagdon
Fluval
Supa
Nishikoi

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