I purchased all the necessary equipment and drilled my own tank! Three holes so far, with one more on the way. Its got a 1" for the overflow, a 1" for the intake on the closed loop and two 3/4" returns in the top two corners. I will be using a mag 5 for a return and maybe a mag7 for a closed loop, alot of flow for just 30 gallons!!! I might use a mag 5 and a mag 3, undecided, depends on which one i feel works best with my tank after i fill it with rock.