question about alk level

[aylad]

I used to a paper with how and what amounts a gallon of 6% bleach, a pound of trichlor and a pound of dichlor had on 10K gallons of water , for ph cya and TA. is that table still here somewhere?

I'm not sure that I ever saw that table, but I can tell you that one gallon of 6% bleach will provide 6 ppm Chlorine in 10 gallons of water. I also can tell you that for about every 10 ppm chlorine obtained with trichlor, you raise your CYA by about 5 ppm. Trichlor will drop your TA and pH, but how much it drops your pH depends on your alk level. I've never used dichlor so I can't advise you about that, but I do believe that dichlor isn't quite as acidic as the trichlor is.

Janet

[waterbear]

Dichlor is less acidic than trichlor but the net results are still acidic and for every 10 ppm fc added it will add 9 ppm CYA.