Good morning! I have looked and didn't see the answer so I'm hoping someone can help me. I am in the process of slamming my pool. My question is, do you test the chlorine using the normal method? My CYA is about 55 so, for a 15k gal pool, that puts my shock level at 22. That is over 100 drops of reagent for a 22ml sample! If I'm going to test it every few hours - or even a few times a day, that is a lot of reagent. Granted, I bought the big bottle, but I just want to make sure I'm not being a dummy about this. I guess using the 10 ml sample would be about half the drops -or am I thinking of this backwards?