I have a 30,000 gal plaster pool with an SWG. Chemistry is: FC=8, CC=.5, TA=70, PH=8, CH=325, CYA=62, Temp=71F, salt=3400, borate=0
Two questions regarding pool math. I am using the pool math website on a MacBook with safari.
1) My PH is 8. My goal is set to 7.5. The detail column says to add 30 oz of 31.45% muriatic acid. Yet if I go to the bottom of the page under 'Effect of adding chemicals', it says that adding 30 oz of 31.45% muriatic acid will lower my ph by .24, resulting in a PH of 7.76. Which is correct and why do they differ?
2) With the above chemistry, pool math says my CSI is 0. I also checked the csi using the cardboard wheel which came with my Jandy SWG and it says csi is +.3. The wheel only uses PH, TA, CH and temp but this still seems like a big difference. To sanity check, I set FC to 2, salt to 2500, CYA to 0 in pool math and the calculated csi went to +.22. I am trusting the pool math answer but wanted to get an expert view on why the wheel seems so inaccurate? I also checked the pool math app on IOS and it agreed with the website.
Thanks!!
Tony
Two questions regarding pool math. I am using the pool math website on a MacBook with safari.
1) My PH is 8. My goal is set to 7.5. The detail column says to add 30 oz of 31.45% muriatic acid. Yet if I go to the bottom of the page under 'Effect of adding chemicals', it says that adding 30 oz of 31.45% muriatic acid will lower my ph by .24, resulting in a PH of 7.76. Which is correct and why do they differ?
2) With the above chemistry, pool math says my CSI is 0. I also checked the csi using the cardboard wheel which came with my Jandy SWG and it says csi is +.3. The wheel only uses PH, TA, CH and temp but this still seems like a big difference. To sanity check, I set FC to 2, salt to 2500, CYA to 0 in pool math and the calculated csi went to +.22. I am trusting the pool math answer but wanted to get an expert view on why the wheel seems so inaccurate? I also checked the pool math app on IOS and it agreed with the website.
Thanks!!
Tony