Pressure question, and when do you replace sand?

[duraleigh]

Hi, Housemom,

Your second post was great.....posting all those numbers and being precise really helps.

My first reaction, is air is getting into your system somewhere between the pump impellor and the skimmers. That is causing your pump not to "prime" and that will cause greatly reduced flow. Check the pump basket lid....make sure the gasket is on correctly. If that's not it, check the drain valve(s) at the bottom of the pump basket....they need to be tight.

Find the source of that air leak and I think you'll be in business.

Disregard changing the sand, that is definitely not your issue.