Tetratec EasyCrystal BioFoam 250, 300
Filter foam for EasyCrystal 250 and Easy Crystal Filter Box 300 filters
TetraTec Easy Crystal Filter Bio Foam 250,300 is a replacement filter foam for the Tetra Easy Crystal Filter 250 and Tetra Easy Crystal Filter Box 300 and also Reptofilter. The Bio Foam provides the biological filtration stage where all the all harmful bacteria are eliminated. The great surface area provides enough settlement ground for the fine bacteria to settle in thus makes best use of the filtration capability. The trouble free and easy to use design means real replacement is clear cut and hassle free.