The Project
I wanted to be able to put my powerheads into the tank without covering them with rocks. I like using the Quick cartridge filters on them. I'll end up using 2 each of Hagen/Aquaclear 402s and 802s. The way I planned on this working, if there are any problems with the powerheads, I can just reach in and pull them out. Same thing with the Quick filters. I feel any way you can keep sand out of a powerhead is good. All I have to do is wiggle the tubing off the powerhead.

I got the cpvc ready at work. The longer pieces ended up about 1/2 the length in the pic with an elbow instead of a "T". I used some clear rubber tubing to attach my powerheads to the CPVC pipe. You can do all kinds of cool things with the cpvc pipe. Just remember, you may have to move some rocks, the longer the pipe, the more rock to move. Don't bother gluing the cpvc either. It fits nice and tight and you'll be able to change the direction of the flow just by twisting the elbow.