Hey im looking for some guidence on a new self installed Hayward DE4820 48sqft, 96GPM, 363LPM which takes 6 lbs of DE per backwash. I have it mated to a 1hp hayward super pump. First time I turned it on and added DE pump pressure was 8 psi after vacuuming algae off bottom pump pressure slightly exceeded operating norm as per manual I backflushed till water turned clear then rinsed as recommended with hayward control valve for 20 seconds. Switched control valve back to filter and added DE 6 lbs. I bled air out of the top air pressure releaf valve till water came out as recommended however water pressure never left 0 and the pump filter basket has air in it. Usually this means I have leaves or dog hair in the strainer or pump strainer which I checked clean. My question is what process did I do wrong? Water pressure is moving but very low filter is still cleaning. Should I backflush again? I have no leaks in plumbing.