There is no typical answer here, it depends on several things, like amount of Baquacil you are fighting, # of gallons in your pool, how many times you are dosing to 15 PPM, etc...Patience is a virtue in the conversion. I have an 18 x 36 IG pool with around 21k gallons, I had a high Baquacil level, and my conversion took about 4-5 days. I dosed 3x a day, once early morning, once when I got home from work, and once before bedtime. Hang in there, it will all be worth it in the end!