Your alk is ok at 170. Don't want it higher than 180, but for now, you're fine. Watch the ph however. You don't want it lower than 7.0. If you are going to use pucks, they are pretty acidic and will usually cause your ph level to drop. For the cya, the label will tell you how much to add per 10,000 gallons to get to a certain cya level. Aim for an initial level of 25-30. I always just add mine to the skimmer while the pump is running and then let it dissolve in the filter. (The label may tell you to broadcast it across the pool, but don't.) Some people do the sock in the skimmer thing. Your choice. Either way, don't retest for it or add more for a week to give it time to dissolve.
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