Andrew McFadden
Aquarium Advice Addict
I have 1 rena running on my 180g and for now I'm good, I have a overflow that goes to a fbf and then a refugium then threw a rena and comes out where my pump is and gets pumped back up. Is it hard on my Cichlids if the nitrite drops down to 15 from 25ish? I don't run this filter all the time only when I'm home.