Today, I got fed up while looking at my tank. My eyes always ended up drifting over to the left side of the tank, AKA: the ugly side. It has all the equipment, but worst of all, it has that ugly white PVC. So I took out the pump and made it into a closed loop. I put the pump on a platform that hangs off the back of the tank made for air pumps. It worked great when just fitted together, but, as expected there were microbubbles. So, I glued everything together, and now it is drying. How long should I let it dry?? Overnight? I am so glad that I did this. My tank looks 100 times better. I cant wait until I get rod of that big clunky bubble diffuser, and mod the CSS output into PVC, and use the Mag-drive pump sponge for a bubble diffuser.