Tetra EasyCrystal FilterBox 300 - Shop at Vivapets
Tetra EasyCrystal FilterBox 300 - YouTube
Tetratec EasyCrystal Box 300 od 20,24 € - Heureka.sk
Purigen - I am running a Tetra Easycrystal Filterbox 600 which came with my tank (unfortunately since it's freaking huge). I wanted to put some Purigen in there, but where do I