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Since the end of summer, my TA has decreased from a range of 90-100 down to 70. My pH is slowing drifting up and is currently 7.9 I am reluctant to add acid in fear of driving the TA so low that I will get in to pH spikes. I suspect the problem may be that I have not added any tap water to...

:compress:Is the degradation of FC from sunlight (not algae or other organic material) linear or exponential with regard to the level of FC in the pool? In other words, all else being equal, does a level of 14 FC degrade faster than say a level of 8 FC? Are there any links or references that...

Hello, I am new to this forum, however I have been a pool owner for 43 years and have owned my current pool for 39 years. I have maintained my pools—pool chemistry, cleaning, etc. myself during that time. I live in Southern Calif. (Orange County). During the past two or three summers, I have...