I'm doing a build now. Have a baby on the way so going slow but I have at least 2600 into it so far. That's only tank, lights, skimmer, return pump and diy sump. That dosn't include calcium reactor, plumbing, live rock or stand that I've made myself and the cost of wood. Stand is done just didnt keep track on costs because I got most of the wood for free. Or the already have items such as test kits, thermometer, water purifier (rodi), suppliments, food, fish, or regular monthly costs. I'm starting over with this one because I went with what I could afford at the time with the 60 cube and didn't turn out as I had hoped. Going with better quality stuff. It's alot less maintence and will save yourself alot of money if you get better stuff from the start and plan well. I have changed plans how to do this tank for over a year until I was happy with what I have.