I just added 1cup of DE diluted in water to my sand filter. I was expecting a pressure increase but I actually lost 3psi almost immediately. Should i continue to add DE until i reach my 1 psi gain? Or is there another issue going on?
Low pressure and bubbles sound more like an air leak. Did you, by chance, backwash just before adding DE? Maybe the water level is now too low and you have a vortex in the skimmer. Go take a look. If you see a whirlpool, there's your air bubbles and low pressure. Fixing that is as easy as dropping the hose in.Okay. My normal clean filter pressure is 9-10psi.
Added DE 1 hour ago and pressure is staying at 7psi.
DE was diluted in water completely prior pouring in skimmer.
I am also getting some bubbles from the return eye now.
Should I backwash and start again with the DE addition and see how the pressures react?