These two filters, for people with no filtration plant, are to be installed between the valve (supplied with the automatic filling system) and the filling system. With a capacity of 2000 gallons (7600 liters) they offer an interesting filter. The first filter removes all micro particles suspended in water (rust, sand, algae) and protects the carbon filter. The activated carbon filter to retain its share of chlorine and chemical residues and pesticides. Replacement after 7 / 8 years for a module EasyGreen continuous operation throughout the academic year.