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For the last several days (and probably longer) I've noticed the water flow into my pool has dropped noticeably: very little surface disturbance near sidewall nozzles, less pressure from the floor jets. The pressure gauge on the filter tank shows its normal 28-30 psi. I've cleaned the two...

I have a 1.5 HP Pentair Whisper Flo inground pool pump (0 177451 - 03). I hear a scratchy/screechy noise coming from the pump/motor assembly. The noise has come and gone for a few years now. I'd like to avoid a catastrophic failure in the height of pool season. I plan to replace the seal or...

Pool details (I can’t edit my signature for some reason and the data in the signature area is incorrect): 22.5 k gallon free form plaster/pebble pool, 1.5 HP Pentair WhisperFlo single speed pump, Pentair FNS DE filter, Aquacal Aerotemp 155 heat pump, 3” tabs or bleach used depending on CYA...

Just before closing our pool last fall I had the cyanuric acid level tested at a pool supply place--they said it was 77 ppm. We just opened the pool and I had the water tested at the same pool place. They say the CYA level is now at zero ppm. I had them test it again one day later and they...

Eight year old 22,500 gallon pebble finish gunite pool in Massachusetts with DE filter and heat pump. On 6/12/2016 the stabilizer level was 51 ppm. On 8/15/2016 it was 70 ppm. And on 8/29/2016 it measured 84 ppm. The first and last tests were performed by the same pool place; the middle...

Today I opened our inground pool. As soon as I powered up the circulator pump copious amounts of water flowed out from the Aquacal Model 155 heat pump. I removed a number of panels from the unit and discovered there was a vertical crack (maybe 1/20th of an inch wide and 2 inches long) in the...

We have an AeroTemp model 155 heat pump for our swimming pool. It's about 5 years old and doesn't get used all that much. The other day I noticed the heat pump wasn't running at all. I reset the circuit breakers which had tripped. Now the heat pump powers up (panel lights up, fan runs) but does...

Background information: 22,500 gallon gunnite/plaster pool with pebble finish, 5 years old, DE filter, Whisper Flow pump, Nature2 Pro G mineral sanitizer, in-floor cleaning system, no water features, light bather load, sunshine on pool from 9 AM to sunset, located in northeastern Massachusetts...

We have a five year old in-ground pool with a stamped concrete pool deck. The pool builder applied a sealant to the deck that looks to be completely gone. I'm wondering if I need to re-seal. Would not re-sealing it significantly shorten the life of the deck? I know the sealant provides a...

I’m considering switching from the trichlor hockey pucks to liquid chlorine. I wanted to get a feel for how much bleach or pool store liquid chlorine I’d need. So I did a chlorine usage calculation for the trichlor pucks. I purchased the pucks on Aug. 5, 2010. I assumed I started using those...

Background: 22,500 gallon fresh water inground gunite pool with pebble/plaster finish, Pentair WhisperFlo pump with 1.5 HP motor, Pentair vertical grid FNSP60 D. E. filter, Nature2 G sanitizer, Pentair 320 inline chlorine feeder, and AquaCal AeroTemp heat pump all located 30 miles north of...