@ isriam: I'll try the buttons to see if I can get a gauge on the life... thank you for that!
@ hoskim: I haven't had an issue until recently, but like NJ, it's been very hot up here in Mass.
Although I passed the OCLT, I still think it's 1 of 2 things: 1) organic matter / algae is consuming all my FC and I simply need to SLAM, or 2) my cell is bad -- or at least old and not working optimally.
Thanks again to everyone for their help!