Our Diagnosis

It sounds like your pond has duck weed

How to be sure

Your pond is covered with little round leaf plants, it spreads across the ponds, it smells and blocks out light for you pond plants.

Remove as much duck weed as possible using a net.
Treat the entire pond using Duckweed Buster, you can calculate the correct dosage here.
Follow any re-treatment advise on pack or on our dosage calculator page..
Check all your equipment is working properly – especially filters. Carry out any maintenance needed, or replace faulty or broken parts.

You should regularly test your pond water for excessive ammonia, nitrite, nitrate or pH imbalance.
Treat any unhealthy results to rebalance your water quality and give your fish the best chance of getting fighting fit again.
Check all your equipment is working properly – especially filters. Carry out any maintenance needed, or replace faulty or broken parts.

Blagdon water and algae treatments can safely be used with Blagdon fish medications.

Only use one fish medication at a time.