Oase AquaActiv PhosLess Filter Granulate helps to reduce algae growth in ponds by binding excess phosphates. It also removes heavy metals and sulphide which can be harmful to fish health.
 
The PhosLess Refill Pack comes with two bags of 1 litre each, which can be used to replace the media in the PhosLess Media Tubes. These tubes are used in the Oase ScreenMatic range of pond filters. PhosLess can also be placed directly into moving water such as a stream or watercourse.
 
We recommend replacing Oase PhosLess every 6-8 weeks for maximum effectiveness. The bound phosphate can be reused as a fertiliser additive in the garden.
 
This product treats up to 10,000 litres of pond water with an initial concentration of up to 5 mg phosphate per litre.