DescriptionTROUGH BLOCKS – ALGAECIDE Trough blocks have algaecide which controls algae and slime in stock troughs One 220 gram blocks treats 7000 litres of water with block lasting 2-4 weeks and should be replaced when slime starts to return Trough should be cleaned prior to use A block will add copper to the water and should not be used where copper toxicity occurs Active ingredients: Each block contains 63g/kg of copper as present 25g/kg copper sulphate For domestic stock water treatment only Made in Australia
