DYIguy
NJRC Member
I got back into reefing while recovering from covid when I saw I could have a reef tank with corals. Did some research and bought an AIO 13g- now I have 4 tanks, all are AIO that I built using the same principal of the 13g- 3 chamber on one end, overflow, middle and return- been thinking about moving to a middle overflow with 2 returns for my 75g- would like some input from anyone who also has in tank sumps for ideas, experiences- what you'd do different