Aquaforest Life Bio Fil is a natural biological filtration media. Due to carefully selected bacterial strains, it initiates and supports the nitrification process which accelerates maturity. Life Bio Fil is perfect filtration media for newly established tanks. Life Bio Fil will also increase the efficiency of filtration in older, already functioning tanks. Due to the content of bacteria, it starts the nitrification process almost immediately theres no need to wait for the settlement of the medium. Life Bio Fil should be placed in the sump in good water flow. 1000 ml medium should be used in an aquarium with a capacity of 400 l. We recommend replacing 10 -20 % of the filling every 6 weeks. Keep away from children. Product for aquarium use only. Not suitable for human consumption.