I was so excited - my TF-100 came in! I couldn't wait to use my new speedstir!
"My pool is perfectly clear, how bad could it be?" I thought to myself....
FC: 5.0
CC: 0.5
PH: 7.5
TA: 180
CYA: 200+
CH: 725
I even diluted the pool water 1:1 with tap water for the CYA test, and the black dot...