RowaPhos Phosphate Remover
Absolutely brilliant service.
Purchased after advice from Ben at Woodthorpe store taken as using new Ro unit which also purchased from here as the membrane is releasing silicate into the ro water made. Ben advised that the rowaphos will take about 3 days to work in the tank to clear the algae/brown diatoms but could take another couple of weeks before the source of the problem has been irradicated from the system. I have full trust in Ben that this will fix the issue but it just a case of waiting and continuing with weekly maintenance. Hence the 3 stars as I havent seen the problem fixed yet.