Quote Originally Posted by Rangeball
It was my understanding that bleach use would eventually cause PH to rise, but will it also increase Alk?

A few weeks ago I had my Alk down to 150. Tested my fill water, and it's 320. I had to add a few inches of water, alk went to 180. Just tested again today, PH is 8.2 and Alk is 250.
No it doesn't. However, alkalinity will rise and fall with pH, so your reading at pH 8.2 will be higher than at 7.5. I'd say alkalinity readings at "out of range" pH are not something to worry about. Get the pH down, then retest your TA.