This is a 90 gallon reef, run on canisters, GFO reactor & a HOB skimmer, no fuge! My next 150 will have a 55 gallon fuge. It's really hard to maintain a reef on canisters.
The key regular water testing S, CA, KH, MG, PO2, and regular dosing on CA, MG & ALK. And daily dosing of liquid aminos