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Keep in mind that baking soda is used to raise alkalinity, rather than to control pH--we recommend Borax to raise the pH and muriatic acid to lower it. HOwever, dichlor and trichlor tabs both are acidic and drive pH down, so if you'll test for it daily, you'll probably find that you don't have to adjust the pH too much. Just don't let it get below 7.0. It is fine to keep using the trichlor tabs and dichlor to keep your chlorine levels up, as long as you stop at the point where you have targeted your CYA. The dichlor will add 9 ppm of CYA for every 10 ppm of chlorine, and the trichlor will add 6 ppm of CYA for every 10 ppm of chlorine--so I would test for CYA every couple of weeks or so, and just switch to bleach when your CYA levels get where you want them to be. Pay attention to the chlorine chart, though--remember that your chlorine levels have to rise when the CYA rises...so once your CYA gets to 20 ppm, your chlorine levels will have to stay between 3-6, no lower!!

Glad your pool is in good shape--now just be diligent about testing, and it should stay that way through the summer! Happy swimming