starionesir
New member
I built my own sump from a old 40 gallon tank and didn't think about having a refugium at the time. I since have decided I want to go that route but don't have the space in the sump. I'm thinking of using a old 3 gallon plastic tank I had setup for a betta in one of my kids room once before. Drilling it for a bulkhead and draining it back into the return section of my sump. Is that really too small of a tank for refugium?