From the manufacturer.
Blagdon Green Away Pond Water Treatment, Clears Green Water and Suspended Algae
Blagdon Green Away Pond Water Treatment 250ml Clears Green Water & Algae
Blagdon Green Away Pond Water Treatment 250ml Clears Algae Treats 5000L
AquaDesign POND CLEAR Water Clarifier 1000ml - Green/Cloudy Water Treats 5000L
