I put 46 oz (Pool Calculator) last night around 6 pm since FC was 1 around 4 pm. Ok, I think this is starting to slowly sink in to my brain! It's during the day I have to worry about my chlorine levels since if I'm reading my CYA right its at zero. The less CYA I have the faster the pool is going to eat up the chlorine? Crossing my fingers I got that right finally