Recent content by Sunnydaze

ACE hardware has a $10 off coupon for $20 or more purchase. I bought 3 gallons of 31% acid for $20 or just under $7 for each gallon. Pretty good deal for the prices around here. https://www.acehardware.com/rewards_instore_offer

It's not the sun/heat if you lost 17ppm of chlorine yesterday unless your CYA is very, very low. Or the testing is inconsistent. When something doesn't add up (and it's not) you'll want to find out what is causing the fluctuation.

I use the Clorox reagent from Walmart for ph. It's the one and only non-taylor test i use. It's always been the same result as my Taylor ph test.

Test your fill water. It may be high in TA. My tap water is about 120ppm so I'm adding acid twice a week to keep pH and TA down.

Lowering TA is a slow process, especially if you don't have a way to aerate. It took me a couple weeks to go from 120 to 60.

20ppm per month of degradation seems excessive. If you have a sand filter, you also lose CYA when you backwash. Any process where water is physically removed and not evaporated. My water in phoenix hits 90 degrees through much of the summer and I don't lose even 10ppm a month.

Chlorine only increases if you add chlorine. There is no chlorine in muriatic acid. Likely the first test showing 12ppm was incorrect.

I've gone on week long vacations with my pool in a phoenix summer and it was fine. I run the FC up to SLAM level and float a few pucks while I'm gone. I just ensure there's some room in my CYA level to accommodate the pucks.

The TA did not decrease from 300 to 200 by knocking the pH down to 7 one time. It will go down by approximately 10ppm, give or take each time. There must be an inconsistency in the testing.

Just curious, would that much FC oxidize the CYA and bring it to 0?

It isn't going to dissolve your fingers. It may sting if you leave it on your skin for a while but I've never even felt a tingle as long as i rinse in the pool right away. I recommend reading the pH part of this blog where muriatic is discussed...

It happens all the time to me where the clear seal remains after pulling the tab off. I just pull it off with my fingers and immediately rinse off in the pool. You could wear gloves or a small pair of pliers or tweezers to pull it off if you really want.

Are the jugs dated? If so, what are they? It would be in a 5 digit code such as 24123.

At this point, you've added 114 gallons of 12.5% in about 24 hours. That is 570ppm worth of chlorine. I can't imagine there is anything in the water that will consume that much chlorine that quickly. Either your chlorine is reduced to just salt and water or the FC is too high to test, even with...

Yikes.