TLDR; I started SLAM last night. ~80 CYA, started at 0.3 ppm Chlorine, 7.5 pH. Dumped 4 gallons of 10% bleach. After it was dark (about an hour after dumping) FC read 34 ppm, CC was 1 ppm. This morning before the sun was up, FC read 22 ppm, CC was 0.5ppm. What is going on here? My novice understanding is that the CC would be higher the morning after starting SLAM.
(I apologize in advanced for the major backstory)
I bought a home with an in-ground Vinyl pool here in North Texas last October. Given it was the end of the season, we essentially just kept the pool free of debris through Winter.
I estimate it to be ~11,000 gallons. The water has been crystal clear for the most part, but we were never able to get the chlorine up to levels we wanted. We were using granulated chlorine dissolved into buckets so we didn’t damage the liner.
Found this forum a few weeks ago, ordered my TF-100, and ran through all the tests this weekend, bought some 10% pool bleach from Walmart, and started SLAM.
Sunday night:
- CYA 80
- 34 FC, 1ppm CC
- 7.5 pH
- 115 TA
- 450 CH
Monday morning:
- CYA 80
- 22 FC, 0.5 ppm CC
- 8 pH
- TA (not tested)
- CH (not tested)
We are cash-strapped and can’t really afford to drain and refill the pool yet, so given the high CYA, we figured we’d try to make it work with liquid bleach even though its on the high range.
What I’m looking for if anyone has the time or care:
1. Validation that I’m doing the right thing given the constraints we’re working within. The pool is crystal clear, so its hard to think that all this is necessary, but I’m trusting all the research the people here have put into pool maintenance. Given the fact that the pool is clear, its also hard to imagine that we ate through 14ppm of Chlorine OVERNIGHT. I can’t afford to keep putting that amount of chlorine in the pool.
2. A better understanding of the relationship between FC and CC. I would’ve expected the CC to be higher this morning after eating through so much chlorine.
And, yes, I added another gallon of 10% this morning. I’m impressed by the community here and would love some opinions if anyone has the time.
(I apologize in advanced for the major backstory)
I bought a home with an in-ground Vinyl pool here in North Texas last October. Given it was the end of the season, we essentially just kept the pool free of debris through Winter.
I estimate it to be ~11,000 gallons. The water has been crystal clear for the most part, but we were never able to get the chlorine up to levels we wanted. We were using granulated chlorine dissolved into buckets so we didn’t damage the liner.
Found this forum a few weeks ago, ordered my TF-100, and ran through all the tests this weekend, bought some 10% pool bleach from Walmart, and started SLAM.
Sunday night:
- CYA 80
- 34 FC, 1ppm CC
- 7.5 pH
- 115 TA
- 450 CH
Monday morning:
- CYA 80
- 22 FC, 0.5 ppm CC
- 8 pH
- TA (not tested)
- CH (not tested)
We are cash-strapped and can’t really afford to drain and refill the pool yet, so given the high CYA, we figured we’d try to make it work with liquid bleach even though its on the high range.
What I’m looking for if anyone has the time or care:
1. Validation that I’m doing the right thing given the constraints we’re working within. The pool is crystal clear, so its hard to think that all this is necessary, but I’m trusting all the research the people here have put into pool maintenance. Given the fact that the pool is clear, its also hard to imagine that we ate through 14ppm of Chlorine OVERNIGHT. I can’t afford to keep putting that amount of chlorine in the pool.
2. A better understanding of the relationship between FC and CC. I would’ve expected the CC to be higher this morning after eating through so much chlorine.
And, yes, I added another gallon of 10% this morning. I’m impressed by the community here and would love some opinions if anyone has the time.
