hello, I'm new to the forum but sorta not new to the hobby. The industry has changed so much since my first reef aquarium. Back in the day I loved my 90 gal., but was really never successful. I look back at it now and can laugh. Filteration was bio balls with high out flourecent lighting...it was a disaster. I want to jump back in but undecided if I should get a 90 or 120 gal. tank. I'm thinking about Radion xr30 for lighting but not sure if I need 2 or 3. Wish I could calculate the maintenance cost difference between a 90 gal. Vs 120 gal. Any help you can provide would greatly be appreciated. Thanks




