I've finally decided what my next project is going to be. I have been wanting to set up a larger display tank and do some things differently that I did not know/understand the first go around on my 20 Gallon. I want to keep the 20 gallon running because it has turned into a beautiful tank and it is a fairly maintanence free tank. My frag tank is a stand alone system and the levels are kept very steady with hand dosing daily and bi-weekly water changes. The issue I have been having is aptasias. I have tried all sorts of stuff to get rid of them. I would say in this 36''x18''x8'' tank, if I were to say there were 100 in there, i would be way under shooting it. They are growing on the egg crate and glass. There are about 15 actually growing on frag plugs. A friend bought me a peppermint yesterday for my birthday and he has already started going at them. Obviously, that won't be enough for the infestation I have. So, my build will accomplish two things for me, it will provide me with a larger display tank and get rid of the aptasia eyesore. The 40 breeder is the exact same length and width dimensions as my frag tank, so it will fit beautifully on the stand. The sump under the frag tank is a 29G with about 30 lbs of live rock and 30lbs of sand for a refugium. The sump on the system is already rated for more than enough to add the 40 and the heaters in the sump are enough. The MP10 PH is plenty for the 40 and the lights are Metal Hallide/LED combo that are hung so that I can adjust them to whatever hight I want. The return pump I believe is enough, but if not it's a simple fix. I have ordered 50 lbs of marco rock that will be here friday and an eshopps overflow box because the frag tank overflow is built into the tank. Im going to put the 35 lbs of caribean dry and i have already at the house and the rock in the 40, fill it with saltwater, put a heater in it, put a couple of powerheads in it, and let it cycle. When the cycle is complete, I'm going to drain most of the water out into a bucket, Drain half the water from the frag tank, swap out tanks, plumb in overflow, put cycled water back in tank and let it flow. The sump that is already on the frag tank is of course already ready to go, so the only thing I need to do is cycle my rock and sand which will be done prior to the tank swap. I'll move all the corals over, do a 20% water change with fresh saltwater and viola, I've sat me up a larger tank and got rid of all those ugly aptasias. Now, after saying all of that.....Will it work? lol