Quote Originally Posted by PaPoolNewB View Post
I walked the pool using one foot directly in front of the other and came up with 27 steps. I am a size 13 so that roughly one foot each step. Know that sounds ridiculous but should be somewhat accurate. So I need to make all calculations based on a 27' X 4' Round AGP.

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What should the TA and PH be in regards to my other readings and are they fine at the current level they are at?

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Is there a way to calculate dosages properly for future reference. I am having hard time locating the PPM level change for X amount of either Bleach, Borax, and Baking Soda based on my Volume which should now be 17132 gallons.
1. You might get a more accurate measurement, by measuring AROUND your pool, and then dividing by 3.14 (∏)

2. In a vinyl pool, CH is not important. TA only matters if you are having problems controlling your pH. If your pH is reasonably stable, I wouldn't bother with any TA adjustment.

3. Trying to calculate doses for pH change is NOT a good idea. If you really need to do that, use the K2006 acid or base demand reagents, and their dose tables.

Otherwise, that's what the PF does. Your PF is 7.8, which means that it is 1/7.8 of a 1,000,000 lb pool (~120,000 gallons). When you add 1lb of a 100% chemical, like stabilizer, you will increase that level by 7.8. So, 3lbs of cyanuric acid in your pool will increase your CYA level by ~23 ppm (3 x 7.8). Plain 6% bleach has about 0.5 lbs of chlorine gas in it, so each gallon will add about 4 ppm of chlorine to your pool (7.8 x 0.5). Dichlor is about 55% chlorine & about 50% CYA (no, I didn't make a mistake; no, I won't explain: trust me, you don't wanna know -- has to do with old water treatment custom!). So 1lb of dichlor in your pool will add about 4.3 ppm chlorine and about 3.9 ppm CYA.