Tetra Tetratec EasyCrystal 250

internal aquarium filters for crystal clear, healthy water. Easy maintenance.<br />
- filter provides mechanical, biological and chemical treatment of transparent, healthy water<br />
- mechanical treatment: bilateral filter sponge for reliable removal of small particles of dirt. White side pre-filter, green side for thorough fine filtration<br />
- Biological filtration: filter sponge and bio-balls with especially pain