I have a 150G saltwater tank, and I just put together a beautiful plumbing system with my sump and refugium behind a wall in the unfinished part of the basement. It's working nicely except for one thing: my pump is too strong.
I just moved and I used to use flexible tubing, it turns out that when I switched to rigid PVC
for this new plumbing project, my pump is working much better! In fact it's too good, I need to find a way to dial it down.
I've seen two ways that people use to handle this, but I don't know which one would be better:
1. install a check valve, which will restrict the flow of water coming out of the pump. Is this bad for the pump? It's effectively what my flexible tubing was doing before and the pump seemed to do fine for years with that.
2. install a T junction, where the extra line goes back to the refugium where the pump is, and that one probably has a check valve on it too. Probably better for the pump, but causes turbulence in the refugium which I don't particularly want.
I haven't really seen a consensus on which way is better, but several years ago when I frequented these forums I remember trusting this community's judgment when it comes to this kind of stuff. What do people think? Is there another idea I'm missing? Also, can I get a PVC
check valve at a place like Lowe's or will I have to go somewhere else to get it? Thanks for any advice.