Was using test strips before, using small testkit now, so getting a more accurate reading. Not sure about the baquacil, it was chlorine when we bought the house. Everything else we have added was discussed here, bleach, a little pH down, and the stabilizer, that's all we have added. The pool foamed up every time we added the bleach in the beginning, now that the algae is gone and the water is more blue it doesn't do it anymore