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My pool's recommended CH is 250 -> 350. I measured it at ~365 about last Oct/2021 timeframe and was surprised to be ~800 today 05/31/2022. (BTW, I just switched to use the new Pool Math calculator for WIN10). I know I should've monitored closely, but the drastic increase just boggled my mind...

We only use Leslie's 3" Chlorine tabs when on vacation so the rest of the year, I keep the container bucket outside the backyard against a fence for shade (kept it inside our tool shed until it got all my tools rusty - a rookie pool owner mistake). But now, someone told me to be wary of keeping...

For those of you who have an automatic pool cover (mine is from PoolCoversInc), have you heard of the Green House effect? A pool service guy (used by my pool builder) said that if the pool cover was to remain closed for about a week (7 days when on vacation) and the temperature is above the...

Having read about this "True Total Alkalinity Reading" value and it's formula -> TA - (CYA/3), should I consider it with my water tests? In the Pool School Recommended levels for Plaster (with Bleach), TA should be 70-90+ ppm. But if I pay attention to this "True Total Alkalinity" formula, and...

I am not sure if it is on my end, but it seems TFP web site has been up and down this morning? Has anyone experiencing this? Morover, I have not been able to connect with TFP through my Android cellphone that seemed to have started about a week ago and could not determine if it is a setting on...

For those of you that have automatic pool covers, where do you put your water level in relation to the skimmer and/or the top of the tiled vault wall (where water spills over)? Did your automatic cover company have specific instructions like - a) keep it level with the tiled vault wall; b)...

To the medical experts out there - Our pool has an automatic opaque pool cover. When I opened it this morning to get water samples for my TF-100 test kit, I found a dead deer mice floating on the surface. Our property is backing into a greenbelt area so we have a lot of wild-life and we are...

I've lowered the pH twice now from ~7.5 ppm to ~7.1 ppm but TA still hovers and registers ~110 ppm. Is there something else I can do to lower the TA?

After putting in LC, how long should I wait before putting in Liquid Stabilizer to increase CYA? Here are my numbers (I use TFT100 testkits):

The last time I tested my pool water(January/February timeframe), the CH was hovering around ~200 to ~250ppm. When I got my TFTestkit refill, I immediately threw the old reagents away so as not to mix them with the new ones. But when I tested the CH last week and again today, it measured at ~425...

I have a 500 gal stand alone spa and been using Leisure Time Spa-56 (Sodium Dichloro-S-Triazinetrione Dihydrate -99%). Does this chlorine type add CYA? It seems over time, after replacing the water, I need to add more and more chlorine to the water leaving me to suspect the water is accumulating...

How long to wait after putting in Liquid Chlorine to put in calcium chloride (Hardness Plus)? Also, I am measuring 200ppm, should I even bother bringing it up to 225 or 250? Thanks

My pool is barely 2 years old. It uses mostly Sta-Rite/Pentair equipments. A few days ago, I asked PB to come investigate what looked like a warped seal around a Pentair check valve flapper. PB came and confirmed the flapper did not look right and told me he would be coming back with a...

As part of the pool build package, the PB convinced us to get a UV system to take care of parasites that are not getting killed by chlorine. He said UV systems will also allow less chlorine requirements. A year later, PB called to unplug the UV unit because of a recall due to arching and...

I am playing with the idea of putting SWG but my pool builder is discouraging me from going that route. This is what he said - " . . . Salt is bad for the cover. The hot weather makes it tougher to keep up with chlorine, but it’s not worth the destructive nature of salt. Just keep up with your...

Hi, I'm a new member. Apologies if I am posting this in the wrong forum subject and will move it if so. Still learning the insNouts. I've been using Leslie's chemicals since my pool was built in 10/2012 and found that my CYA is creeping up there. The pool was started by a pool service company...