Fish4dawin
Fish Addict
So in our kitchen we have a 30 litre or 7ish gallon tank, and I just wanted to ask if I could have sand in the biorb. I already asked my mum about this a few times but I just wanted to ask on here as well. The substrate in there right now is some quiet big kind of like rocks. Is that what you should have in a biorb or can you change it to sand or gravel?