pjt, Thanks so much for your response.
I usually add 112lbs of Borax in the beginning of each season as my experience has been that it keeps pH from bouncing.
Latest results: pH 8.0, FC 2, CC 0, CH 320, CYA 25, Temp 88, Salt 3,000.
Test kit is Taylor K-2006C.
DPD Powder + regent to test...