I've only had my 27 cube for 3-4 months and I ran out of space real fast. I plan on picking up a 40 breeder in the next couple of weeks. I was going to go the sump route, but then I started adding it all up and it was a lot since I'm a college student. I have a simple plan in my head, which is 30-40 lbs of live/dry rock and 20-40 lbs of live sand. I currently have a lot of zoa's and LPS and a couple of SPS. I'm just looking to keep more zoa's and add a BTA. I'm currently only running 2 425 PH's and an AquaClear 70 as a refugium with chaeto and chemi pure elite. Everything has been doing great. My plan is to keep this same basic set up with the 40B. I plan on upgrading my powerheads to TWO 1150 Koralia's; one on each end of tank facing each other slightly aimed towards the surface or both of them in the back panel crossing each other. All I plan on using is my AC70 refugium and the 1150 PH's. Will this be enough for this size tank? Are the 1150's too much? What is a good skimmer that I can fit in the AC70? Thanks in advance! Any other opinions are greatly appreciated!