Unless you've added bromine, then you have none in the pool, and can ignore that result. Chlorine is okay at 3 ppm but that's as low as you want to go with a CYA of 30. Might want to bump it up just a little bit to give you some "wiggle room". Alk is fine, CYA is fine if you're able to hold a chlorine residual all day. If the water looks okay, feels okay, the numbers are fine.

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