I'm in the process of adding dichlor to new water for 4 days to get my CYA ideally up to 40. I intend to run a test for CYA after I have added what should be the right amount to get to 40.
My confusion is in the amount of dichlor that I am adding. Pool Calculator says I need 7 ounces of dichlor to get to about 40 CYA in my little pool. I am using a tablespoon to measure and by volume am going by 2 tbsp = 1.0 oz. Something is telling me I should be going be weight and not volume, but that's likely not a huge difference. Something else is telling me I'm over complicating this.
So how much dichlor is a tablespoon?