After last week's iron/rust getting dumped into the pool incident that was part of my remodeling / roof replacement project I took a sample of the pool water into a local pool store today for their "free" testing to get the iron levels (for what that is worth) since I don't have a test for metals since they are not usually an issue.
Of course their numbers and advice came back questionable, did show 0 for iron and copper though
Which brings me down to the question, one of their sections is listed as " Alkalinity w/ stabilizer correction their test showed 107ppm, my TF-100 TA test shows 70 ppm, does anyone know what this "correction" is? I am sure it is wrong whatever it is as their CYA reading was 10 ppm, mine was 20 ppm when I last tested it on Friday and added enough CYA to boost it to 30 ppm.
Also does anyone else know any other "corrected" readings that pool store tests use? Someone in another thread mentioned something about corrected pH the other day?
p.s. they also show hardness at 80 ppm and suggest adding 60 pounds of "water hardness", first off I have a vinyl pool, second off my hardness test last weekend showed a calcium hardness of 160 ppm, you have to love pool stores, they also wanted me to add enough CYA to boost the level by 35ppm, imagine that recipe for disaster