EriksFish315
Aquarium Advice Addict
Just got my reef octopus bh 2000 hob today from BRS my question is next to the collection cup there is a hol there right under the screw the hold the cup tight what's the purpose of that? It's just spewing water back into the tank basically. Also and pictures of one set up can help me it's running fine lots of micro bubbles but that's expected I primed it correct.