My CYA level seems to have dropped from 35 to ~15 in just a few weeks. I tested twice over a span of 3 days just to confirm I didn't do something wrong while testing. We have had a lot of rain recently so I'm hoping that's why because I haven't added any water to the pool. It seems odd to me because my level was always much higher last year, even after draining off part of the pool. I never had to increase CYA after converting to BBB last year. Does this seem reasonable? I can't find the tub of stabilizer that came with the pool so I was thinking of putting some trichlor pucks into the currently unused inline chlorinator. My pool volume is about 5500 gallons and the pool calculator tells me I need to add 18 oz. of stabilizer. How many 3" pucks would that equate to? Thanks.