ok couple more questions. im building a 120g 4x2x2 tank, 40g breeder for a sump. as of right now i am planing on having a eheim 1260 return pump, and im going to be using a bm-nac7 skimmer in sump. will this setup work fine? i wanna do 2 1 inch drains to sump. what size return should i use? also i will have a mp40esw and 2 tunze 6025 modded for power heads. also this tank will be mostly zoas, palys, lps, and a couple monti caps. no sps as of right now. i thing the power heads are more then enough flow for what i wanna keep. so im not looking for the return to be a huge source of water flow