Ideally ponds would be filled and topped up with rain water, but this is rarely possible and most people use tap water.  Ecopond Chlorine Guard is an eco-friendly solution for the treatment of the chlorine, chloramines and heavy metals in tap water which can be harmful to fish and wildlife. It contains natural compounds which bind the chlorine and it contains no synthetic chemicals. Chlorine Guard should be used each time the pond is topped up with tap water.
Dosage: 10 ml per 1,000 litres of pond water every time the pond is topped up.