Hi all,
About a month ago, I wanted to bump up CYA from 50 to 60 to try to minimize FC loss (usu. 5-6ppm/day). I did calculations on pool math and put in dry acid with sock method. I tested 2 and 3 days after, but no change, but a week or more later I noticed the change. Fast forward to 3 days ago. I had significant evaporation, and used hose to fill. Unfortunately, I filled too much and had to drain about 1 1/2" of water (I don't if this is significant to drop CYA), but my CYA was 40, then 30. I put in dry CYA per pool math calculation to bump up to 60, and 2 days later it still tests 30. I have been using volume and I probably should be using weight but is there a significant difference? I don't know how much 16 oz of dry acid weighs. Is the pool math suggestion in weight or volume?
I am just frustrated as I tried this earlier in the season and had similar results of it not coming up. Any suggestions or reasons why it still shows unchanged?
My test results tonight are:
FC 6
CC 0
CYA 30
pH 7.6
TA 90
CH 80
Thank you
About a month ago, I wanted to bump up CYA from 50 to 60 to try to minimize FC loss (usu. 5-6ppm/day). I did calculations on pool math and put in dry acid with sock method. I tested 2 and 3 days after, but no change, but a week or more later I noticed the change. Fast forward to 3 days ago. I had significant evaporation, and used hose to fill. Unfortunately, I filled too much and had to drain about 1 1/2" of water (I don't if this is significant to drop CYA), but my CYA was 40, then 30. I put in dry CYA per pool math calculation to bump up to 60, and 2 days later it still tests 30. I have been using volume and I probably should be using weight but is there a significant difference? I don't know how much 16 oz of dry acid weighs. Is the pool math suggestion in weight or volume?
I am just frustrated as I tried this earlier in the season and had similar results of it not coming up. Any suggestions or reasons why it still shows unchanged?
My test results tonight are:
FC 6
CC 0
CYA 30
pH 7.6
TA 90
CH 80
Thank you
