Natural bacterial suppressant for Blanket Weed (String Algae) and Green Water (Single-celled Algae).Viresco is also effective at breaking down organic pond floor matter.Treats up to 12,500 litres (2,780 Gallons) of pond or lake water.Viresco treatment will also promote resistance to fish disease and can be used on small ponds or larger lake waters.Note: Needs sufficient supply of oxygen to enable effective & prolonged growth of bacteria and to protect fish stock. Please view ourpond & Lake Aeratorsfor suitable oxygenators, if required.
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