…directly to the skimmer whilst pump is running Dosage: Initial start-up dose is 100 - 170gms per 10,000 litres Then apply a daily dose of 20 gms per 10,000 litres Dosage rates indicated are only a guide Available Sizes: 1kg Rigid Pack 2kg Rigid Pack 4kg Rigid Pack 10kg Rigid Pack 25kg Rigid Pack