I basically had to buy most of the plumbing. The only plumbing included with the tank are the short pieces that go in the overflow and the returns. So the extra pipes, couplings, elbows and what not I had to buy.Thanks for sharing pics of your 75 ext from IM, especially the plumbing. I'm looking at this tank and one from Mode aquariums. Other than the gate valve, did you have to buy any additional parts to finish the plumbing?