Our Diagnosis

It sounds like your pond has an algal bloom

How to be sure

Your pond is so green you are unable to see the contents of your pond. It’s green and murky, like pea-soup.

Treat the entire pond using Green Away, you can calculate the correct dosage here.
Test your pond for high nitrate levels and treat any water quality issues.
To prevent further algal blooms use Sludge Buster to help remove any dead algae.
Check all your equipment is working properly – especially UVCs. Carry out any maintenance needed, or replace faulty or broken parts.

Dose with Pond Guardian Tonic Salt to help support the fish’s immune system
If your fish are gasping at the surface, increase oxygen levels by adding an air pump.

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

Only use one fish medication at a time.