First, I must say that I too am now a believer in using a good test kit..and this is only the second year with a pool! That said, would just like to know if I'm on the right track here. Pool size = 22,500 gal, above ground vinyl (next have to figure out how to add info show it always appears...but first things first).
FC= 2.5
CC=0
TC=2.5
pH = 7.0 (?)
T/A = 140
CH = 120
CYA= 33-35 range
temp = 70
OK, here's what I think I know from reading pool school charts, etc. My FC is at the low end but ok with my CYA level. Calculator says optimal is 4 so will add gal of bleach. My ph is low because I lowered from 7.8 to get first reading of TA down from 170, which it did. Today, I am aerating by turning return valve upward to break surface. Would like to get to get TA down to 120, is that correct? And this aeration will only raise pH and do nothing to TA, correct? Once pH is back up, I will lower it again to try to drop TA from 140 to 120 (or is the 140 OK?). And CYA is OK, where it is, correct (and shouldn't need to test this again unless massive rains, true?). The only problem I have with the TF kit is that it seems as though there should be a more accurate way to test pH. I can't tell exactly where the color is on the vial...it's a very pale orange so seems somewhere between the 6.8 and 7.2 range, but hard to tell. All I know is, it's low. Any ideas?
FC= 2.5
CC=0
TC=2.5
pH = 7.0 (?)
T/A = 140
CH = 120
CYA= 33-35 range
temp = 70
OK, here's what I think I know from reading pool school charts, etc. My FC is at the low end but ok with my CYA level. Calculator says optimal is 4 so will add gal of bleach. My ph is low because I lowered from 7.8 to get first reading of TA down from 170, which it did. Today, I am aerating by turning return valve upward to break surface. Would like to get to get TA down to 120, is that correct? And this aeration will only raise pH and do nothing to TA, correct? Once pH is back up, I will lower it again to try to drop TA from 140 to 120 (or is the 140 OK?). And CYA is OK, where it is, correct (and shouldn't need to test this again unless massive rains, true?). The only problem I have with the TF kit is that it seems as though there should be a more accurate way to test pH. I can't tell exactly where the color is on the vial...it's a very pale orange so seems somewhere between the 6.8 and 7.2 range, but hard to tell. All I know is, it's low. Any ideas?