So i went in vacation had perfect clear water. Before i left for 8 days my chemistry was as follows:
FC - 5
CC - 0
pH - 7.4
TA - 90
TH -160
CYA - 40?
I questioned i was reading CYA correct so i got a 50 standard and was going to test again when i got home.
Before i left i dumped a gallon of...