Pond Water Treatments

Clear, healthy pond water depends on balance. Our pond water treatments help you get there, whether you're fighting algae, breaking down sludge, making tap water safe or correcting pH. We stock trusted brands including API, Pond One, PondMAX, Splosht, AquaPro and BBA BioSolution.

Find the right treatment

• Green water and algae control – treatments for green water and string algae, including API Algaefix and Pond One algae blocks.
• Beneficial bacteria – natural bacteria such as API Ecofix and Splosht, which break down sludge and fish waste.
• Water conditioners and pH – make tap water safe for fish with API Tap Water Conditioner, or adjust pH with API pH Down.

Treat the cause, not just the symptom

Algae thrives on excess nutrients and sunlight. Treatments work best alongside good filtration, a UV clarifier for green water, and plenty of plants. Our filtering pond plants soak up nutrients naturally. Test your water first with a pond test kit so you know what you're treating.

Always follow the dose on the label and check it's safe for your fish, plants and frogs. Read more in our guide to understanding and controlling algae in ponds.