I didn't end up doing my water test yesterday until after dark and knew I'd be up by sunrise this morning, so I thought I do an Overnight Loss Test just to see. Upon testing this morning, I had a loss of 1.5ppm (5.5 last night, 4 this morning).
I was not SLAMing the pool at the time, I just did the test because it was dark.
Water is Crystal Clear. Pool pump did not run during the night.
Last night's TF-100 test
CYA Not Tested, but its in the 50-60 range (closer to 60), based off testing in the last couple weeks)
Water temp is in the low 90s.
Does the loss of 1.5ppm tell me anything? Do I need to SLAM/go to shock level?
I've got plenty of time to mess with it today...