There is no autofill. I don't feel like I add that much water, either (about 1" of water each week).
The last full set of tests was from back on 4/26: FC=7.5, CC=0, pH=7.5, TA=110, CH=375, CYA=60, Salt 3100, Temp 83, CSI=-.04. I've been watching and testing the FC and pH and keeping them in...