Tannins in Pool Water?

[nrbarnard]

Can you help me understand where you got 12 cups? I used the link below and I came up with 6. I believe you of course, but just want to understand. 😊

http://www.poolforum.com/pf2/showthread.php/17055

[PoolDoc]

"PF=12" is more a note to me. It means that your pool is 1/12 of a million pound pool, or that 1 pound of stabilizer (or chlorine gas) will add 12 ppm of stabilizer (or chlorine).

PF (Pool Factor) offers a quick way of calculating doses:

PF x pounds added x % concentration = PPM added.

So, in the case of 1# of dichlor (55% chlorine; 50% stabilizer), the calc is:

12 x 1 x .55 = ~7 ppm added (6.6) for chlorine and 12 x 1 x .50 = 6 ppm stabilizer. (I know the percents don't add up: but chlorine percents are reported compared to chlorine gas, which is 100% chlorine gas, but when hydrolyzed is ~50% HCl and ~50% HOCl. HCl is muratic acid; HOCl is chlorine in the pool or sanitizing sense.)