I've had my setup for a few months now, and im wanting to switch to all PVC plumbing. I currently use only a little PVC and a lot of plastic hose. Right now, I have plastic hose coming down from my overflow, and doing a slow bend so it can go into my sump. Can I have PVC come straight down and use an elbow for a sharp turn under my stand and into my sump, or will that mess things up? Or do I need more of like a macaroni shaped peice that does a slow 90 degree turn?