The pump was restricted some by the extra DE in the filter (added per this site)....had it at about 26-28 psi. I heard that a plugged filter actually filters better. Normally I would backwash at this pressure but nothing else seems to work. I was actually running on low speed at ~10 psi, but the filter was close to needing backwashed.

I run with the main drains closed so the skimmers will function better. I have dual main drains with the upgraded covers so it's not really a safety issue. I have a lot of over hanging trees etc. and I need as much skimming as I can get.

The original pump is a WFE-4.

Quote Originally Posted by mas985 View Post
I don't remember you saying anything about this. How have you restricted the pump?

Also, I noticed from the picture that you may have one of the suction lines closed. Is that the case and if so, is the 20 PSI clean filter pressure when that port is closed?

Also, what was the model # of your original pump (e.g. WF-4 or WF-24)?

All of these things can make a big difference in the operating point of the pump.