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Followed the directions on this website for the AA treatment 2 weeks ago. FC was zero, ph 7.5, and added Polyquat before starting. Initial 1.75 lb dose in my 20,000 gallon pool removed most stains almost immediately, but I brushed and waited 24 hours to get the stubborn stains. Still some stains...

I've been using mostly Clorox bleach this season to chlorinate my pool. But it seems that every time I add bleach my ph goes up too. That means adding muriatic acid which I hate to do. Going to experiment with using Trichlor tablets for a while to see if my ph still goes up. TA is 110 and...

Last week the pool plastering company sent a guy by to test removing a large ash stain from my pool. He successfully removed it in a couple of areas with ascorbic acid and some other acid, but a few days later I noticed that the pool water had become cloudy, the ph had dropped below 6.8, and...

Shortly after I closed our in-ground pool last fall and put on the winter cover, there was a wildfire close to our house that put a lot of ash into the pool. I opened the pool a couple of weeks ago to find that at the deep end the ash seems to have stained our year-old Pebble Fina. I contacted...

I was just doing a mid-winter check of my skimmers and discovered several hairline cracks in them - very disappointing as they were just installed summer before last as part of a major remodel. I've always been careful to put a Gizmo in each skimmer when I winterize, and this winter they were...

I currently have a 25,000-gallon IG pool with a WhisperFlo WFE3 .75 HP pump installed in an underground vault about 4 feet below water level - although I just noticed that when the impeller was replaced on the pump 7 years ago, the repairman used a .5 HP impeller. So I'm probably only getting...

Just opened our in-ground, gunite pool which we had re-plastered last summer along with skimmer replacement. The skimmers have equalizer tubes with openings in the pool wall below the skimmers. When I winterized, I dropped the water level below these equalizer lines, blew them out, and capped...

I've read through the posts in the closing topic, but none seems to address my concern. What should the water level be in a closed, plaster in-ground pool? The plaster manufacturer says that plaster should be submerged in water all of the time; but I know that the water level cannot be at the...

Our 25K in-ground pool was replastered with Pebble Fina on 7/9, but I just now read the Pool School article about new plaster. What is the 'sequestrant' that is mentioned? My pool contractor didn't mention anything about adding sequestrant. Their only instructions were to brush and backwash a...

My 25K in-ground pool was re-plastered with Pebble Fina last Friday, and I'm having trouble balancing the water. Plus I saw in one topic here that a freshly plastered pool might require different recommended levels? At any rate my first obstacle is the high PH. I've added 1.5 gallons of muriatic...