I'm having a problem with the flow back into the pool. I noticed the PSI jumping north of 25 when it normally is around 15. Went and felt the returns and there was barely any pressure flowing into the pool. That was the morning of 6/7, since then I've backwashed/rinsed the filter 3 or 4 times over 24+ hours, each time achieving normalized PSI reading and thereby much improved flow from returns. However, a couple hours later the pressure builds and return flow dwindles. I recently changed the sand in the filter, is this normal for a length of time? If not, help?!?!?
Some background...
Last weekend, 5/31, I opened the pool for the first time (20+ year old pool, but first time pool/home owner) to pretty cloudy water. Had help dialing the chemical levels into normal ranges (except hardness) over the course of the week, and was told to change the sand in the filter by local Leslie's store (previous owner also confirmed sand needed changing sooner than later). So this weekend, 6/6, I did some research, drained the water, sucked out the old sand, discovered a broken standpipe inside, bought new standpipe/lateral mount/laterals, rinsed the filter body, screwed on drainage cap, insert the new standpipe/lateral manifold, filled 50% with water, covered standpipe opening, added 300 lb of Lighthouse brand filter sand (recommended by Leslie's.. the problem??), lined up multiport valve, re-bolted valve collar. Backwashed (2-3 min) and rinsed (1 min) with no leaking from filter (little from backwash hose fitting). Next morning, 6/7, come out to find PSI > 20 and barely any pressure from returns. Backwashed/rinsed filter, and saw improved flow. Added 25 lb of calcium stuff. Waited 6 hours later and then added Leslie's Clear Aid (to fix cloudiness). Checked late in the afternoon to find PSI > 20 and flow had diminished, backwashed/rinsed, and saw improved flow. Came out this morning, 6/8, to find PSI > 25 and barely any water pressure from returns, backwashed/rinsed, saw improved flow. Now convinced this can't be normal.
***I have emptied the skimmer and pump bucket constantly (even with minimal debris accumulation). Upon suggestions of a friend, I checked the pump impeller last night to make sure nothing was tangled up, and it was clean.
Some background...
Last weekend, 5/31, I opened the pool for the first time (20+ year old pool, but first time pool/home owner) to pretty cloudy water. Had help dialing the chemical levels into normal ranges (except hardness) over the course of the week, and was told to change the sand in the filter by local Leslie's store (previous owner also confirmed sand needed changing sooner than later). So this weekend, 6/6, I did some research, drained the water, sucked out the old sand, discovered a broken standpipe inside, bought new standpipe/lateral mount/laterals, rinsed the filter body, screwed on drainage cap, insert the new standpipe/lateral manifold, filled 50% with water, covered standpipe opening, added 300 lb of Lighthouse brand filter sand (recommended by Leslie's.. the problem??), lined up multiport valve, re-bolted valve collar. Backwashed (2-3 min) and rinsed (1 min) with no leaking from filter (little from backwash hose fitting). Next morning, 6/7, come out to find PSI > 20 and barely any pressure from returns. Backwashed/rinsed filter, and saw improved flow. Added 25 lb of calcium stuff. Waited 6 hours later and then added Leslie's Clear Aid (to fix cloudiness). Checked late in the afternoon to find PSI > 20 and flow had diminished, backwashed/rinsed, and saw improved flow. Came out this morning, 6/8, to find PSI > 25 and barely any water pressure from returns, backwashed/rinsed, saw improved flow. Now convinced this can't be normal.
***I have emptied the skimmer and pump bucket constantly (even with minimal debris accumulation). Upon suggestions of a friend, I checked the pump impeller last night to make sure nothing was tangled up, and it was clean.