This post got caught in the page change between page 2 and page 3, so I am reposting it.
Thanks for all of the support and information during the conversion! I would have been at a loss without all of your input. I have a few questions going forward regarding chemicals, and I hope that the questions would be answered here in this forum rather than in the chemistry forum so that others doing the conversion can benefit from the info.
1. I am having trouble with the CYA test in my TF100 kit, I don't understand the direction that reads" until you can no longer see the black dot".Is this to mean that the black dot is obscured so that you can only see a darker spot, or does it mean 'all I see is cloudy liquid". My son reads the CYA level at a shade over 30 ppm.
2. I see conflicting info on the CYA level. Some sources say 30 ppm and some say 40 ppm. Which is preferred?
3. My FC level was 4.5 on Saturday evening, and .5 on Monday morning. We have had partly cloudy to sunny days with about 3/4" of rain on Saturday evening. Is this a normal loss with a CYA level of 30 PPM? PH PH is up to 7.8 from a pretty steady 7.5 over the last few days.
4. I am thinking about an automatic chlorinator, specifically the Pentair Rainbow 320. I also understand that using the tablets will raise CYA over time. If I would keep my fc at around 3 ppm with the tablets in a chlorinator, how much of an increase in CYA could I expect over the next 3 months. Also, does CYA go away over the winter? My pool is generally covered for the winter from mid-September to mid-may.
Again, I realize these questions may be more in line with pool chemistry, but I am hoping this info can be kept in this thread for future conversions.