15000 gallon in ground pool. Mesa, AZ. Pebble tech.
Was salt cell, it broke, now just using chlorine in. Salt cell is just unplugged, but still part of the plumbing. Hayward DE 4800 Filter. Hayward Floor Pool Vac.
Pool had algae - on a scale of 1-10, 10 being the worst it was about a 6 or 7.
What I've done - replaced filter grids and manifold, added shock, added algae killer stuff, trying to run pump 24/7.
My problem has been is that pump pressure goes up to 25-30 after 4-5 hours and the water flow is really, really slow so I can't circulate the water to get it clean. So last night (3rd day of efforts) I opened up lid of filter, recleaned filters, replaced DE and fired back up. Seemed to be running OK through the night after all of that. Tank pressure was at about 10-15 psi.
Should I have low water flow at 20-30 psi on hayward 4800 DE filter?
I have good flow at 10-15 psi but it's almost impossible to keep it that way. Shouldn't it still flow well at 30 PSI? What am I missing? I cleaned pump impeller, filters, pump basket, skimmer basket, made sure salt cell was clean. I'm not sure what else to do.
HELP - IF I CAN'T KEEP MY WATER FLOWING I CAN"T GET RID OF ALGAE!!!