We are new owners to a 33,000 gallon gunite salt water pool and are trying to do or own maintence. We struggled with trusting pool builders so I'm not suprised our first reading is way off. Our pool company just finished "maintaining" levels for us for the past month. I checked our levels today with the TF-100 kit. PH 8.2, no chlorine, TA 40, CYA ? None?, CH 225. Our SWG says low salt. The pool looks fine. I have everything in the pool math app. I guess I'm wondering where to start as far as adding chemicals. Thank you so much in advance!