This is my 40 gallon bow front that i set up about 2 months ago. I just hooked up a 55 gallon sump to it tonight actually it only has about 40 gallons of water in it tho. I mainly hooked it up to add the extra water volume to make things easier i dont have alot experience with saltwater but enough to get the basics down. I'm currently running a mr1 media reactor with gfo then i have a tunze 6045 powerhead. I'm running a icecap retro fit for my light with 3 geissman atintic bulbs and one white with ice cap reflectors. My return pump also runs at 600gph.