RP Nitrate Remover helps reduce nuisance algae by starving it of its primary food source nitrate. It uses a premium grade ion exchange resin which works in a wide range of pH parameters and temperature conditions. Each pack contains 3x 100g pods which are sufficient for up to 350 litres of water. Can be used in both freshwater and marine aquariums. RP Nitrate Remover uses a premium-grade nitrate selective ion-exchange resin to remove nitrate quickly and safely from aquarium water. This is a similar method to what is used in many other industries.