I am new to pool ownership and this forum but I have spent a tremendous amount of time educating myself and testing the water, etc. so although this is my first post I have read a great deal on these forums, thanks for that! When I got the house the current owners had been gone for 6 weeks and the PH and alkalinity levels were pretty low but I digress. Over the past month I have got everything in balance, thanks largely to this forum! I have recently switched to liquid chlorine as my CYA figures are at 135 and I do not wish to drain the pool at this time. Pool water looks great and test results are below. My question now is do I need to raise alkalinity since my adjusted figure is a bit low due to the high CYA figure? I know Alkalinity helps stabilize the PH level but my question is does total alkalinity stabilize PH or just the adjusted figure, i.e. 107 or 66? The pool store is telling me to raise my alkalinity but I am a bit concerned this could get me into PH lock if I go too high on the total alkalinity. I have not had any wild swings in PH or any signs of something a miss? I am having to lower my PH .1 -.2 a week right now but I understand that is fairly common. I am in the Houston TX area where temps are over a 100 right now. Any help is greatly appreciated!
Temp = 85
SI = 0.3
TDS = 900
Total Chlorine = 4.1
Free Chlorine = 4.1
PH = 7.8
Total Alkalinity = 107
Adjusted = 66
CH = 287
Pool is ~25K Gallons pebble tech built in 2014 w/o SWG.
Temp = 85
SI = 0.3
TDS = 900
Total Chlorine = 4.1
Free Chlorine = 4.1
PH = 7.8
Total Alkalinity = 107
Adjusted = 66
CH = 287
Pool is ~25K Gallons pebble tech built in 2014 w/o SWG.