Envii Algae Klear Xtra – Blanket Weed Treatment for Ponds, Removes Blanket weed & String Algae, Safe for all Fish & Plants – 500ml Treats 10,000 litres

Evolution Aqua Pure Duo Pack Pond Bomb & Sludge Bomb Pond Clear Water Treatment Pond Sludge Remover - Duo Value Pack Offers Complete Natural Pond Water Treatment for Fish Ponds

envii Sludge Klear Pond Sludge Remover – 6 Tablets treats 30,000 litres, Natural Bacteria Sludge Buster Digests & Controls Organic Waste, Safe for All Fish & Wildlife

Envii Winter Pond Treatment – Reduce Sludge, Clears Green Water & Improves Water Clarity, Works at Low Winter Temperatures, Natural Bacteria Treatment for All Ponds – Treats 60,000 Litres

Evolution Aqua Pure Sludge Bomb Pond Sludge Remover – Natural Sludge Buster for Pond Clear Water Treatment, Bacteria Balls Cleaner Pond Bomb for Fish Ponds | 1 Gel Ball Treats 20,000 litres

Blagdon Pond Sludge Buster, Digests Harmful Organic Waste, Introduces Good Bacteria, Keeps Pond Clean, 4 x 9g Sachets, Each Sachet Treats 2,273 Litres

API POND ECOFIX SLUDGE DESTROYER Pond Water Clarifier and Sludge Remover Treatment 1.89 L Bottle,White

Pond Logic MuckAway 8 lbs

NT Labs Pond Sludgeclear, Pond Sludge Remover, Digests Organic Material in Pond Sludge, Reduces the Risk of Fish Becoming Diseased (250 ml)