POND MEDIC 500ml algae clear

POND MEDIC algae clear controls most types of algae in fish pond.
This medication does not contain copper or heavy metals and will not affect fish if used correctly.
Extremely green ponds may experience oxygen depletion after treatment. This is due to the dying and decaying algae during and after treatment.
Do regular water changes (every 4-6 weeks 20-40% at a time).
Harmless to most water plants, fish, invertebrates and birds.