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I live in southern CA, and a couple months ago I had to drive to a nearby town to get 31.45% muriatic acid when my local Ace Hardware store was out of stock. I thought there was maybe a a temporary COVID-related supply shortage like with everything else these days. Now I need to purchase some...

Shortly after we finished pool construction last year, I noticed two small round dark blue patches on the floor of the deep end. They are smooth to the touch and sit on top of the plaster. We had a pool maintainer at the time. When I asked him about them, he said they were minor workmanship...

I currently keep my pH in the 7.6-7.8 range, per TFP recommendations. My water supply has pH>>8 and TA around 130 and I have a SWG, so I have to add about 4oz of acid every day or two. I noticed on the PoolMath app that at summer water temperatures my CSI would be a bit lower with a pH of 7.4...

A couple of weeks back we got a new Pentair Warrior SE from Marina Pool and Spa as recommended by several folks on here. The problem is that the cord becomes so tangled that often the robot won't be able to reach the entire pool. There's lots of good advice on here, and I've tried everything I...

I just bought a Pentair Warrior SE from Marina a few days ago. Although this isn't saying much, I'm pretty sure it's the smartest member of my family. It's really interesting how it will suddenly stop and scrub back and forth for a while, or decide not to climb the wall to the tile line even...

Our pool is a couple of months old. The past couple of days I've noticed that there is very little return flow to the spa while in Pool mode. If we stick our thumbs in a couple of the pool return jets to force the flow back through the spa, the problem goes away for the rest of the day. I assume...

According to the simplified Chlorine/CYA chart, the target FC for a SWG pool with 70ppm CYA is 5ppm. But according to the Pool Water Chemistry thread, the minimum recommended level of HOCL (disinfecting chlorine) required to kill both bacteria and algae is 0.05ppm. The rough formula to...

I have a manual valve that directs suction from either the pool vacuum or the drains/skimmer. I've found that my vacuum works best if all suction goes through it at around 30gpm, with the drains and skimmer closed. If I pull from all intakes then the vacuum has difficulty climbing walls, even at...

I tested CH for the first time yesterday, after having water in the new pool for a month. The level was [EDIT] 130, which is fairly short of the 250-650 range. I called our pool maintainer and asked if he could bring by some calcium chloride on his next visit to bring it into range. He said that...

Hello, new pool owner here. Our pool has a pebble tec liner and a SWG. After re-reading the Pool School and going through various owner's manuals, I've noticed that the TFP differs substantially from the other sources on the recommended TA and CYA levels: TPF recommends: Taylor test kit and...

Has anyone come up with a good way to monitor your pool system status at a glance? We installed the Pentair ScreenLogic2 controller as part of our new build. I'm thinking of buying a cheap tablet to mount to the wall and function as a dedicated "always on" interface so I can see the system...

After waiting a couple of weeks for the pebble tec in our new pool to cure, I tried out the gas heater for the first time today. It's a Pentair 400 series, and apparently requires a minimum 40gpm water flow while heating. Now, if one were to hyothetically try to run the heater while sitting in...

We're in the middle of a new pool build. We plan on hiring a pool maintainer once it's finished, but I would prefer not to blindly trust this large investment and my family's health to the care of someone else. I would like to develop a fairly deep understanding of water chemistry and pool...

I think I read in one of the threads here (can't seem to find it again) that someone got a lifetime warranty on their concrete shell. Is that something that we should expect? We're hoping to sign with a PB within the next few days and start construction soon. One of the prospective builders has...

We're planning on starting construction on an in-ground SWG pool in southern CA within the next month or two. I'll start a construction thread once details are finalized. TPF has been an invaluable resource, and after doing a lot of research on here we're thinking of going the "owner builder"...