I switched from Baquacil to chlorine last year and couldn't be happier. Not only am I saving a lot of $$$ but I am finally doing what the Baquacil sales pitch said I could do; spend more time enjoying my pool and less time working on it. I hate to say it, but I have only brushed my pool once this year, and did that out of guilt from not doing it. My pool is sparkling and not 1 speck of algae. If you are draining to the bottom and starting over, you should be good to go in a day or two. BTW- you didn't mention if you have a liner in your pool. If you do DON'T drain all of the water out!!! You can read how to do partial drains a couple of times and accomplish the same thing without any damage to the liner. If you don't have a liner, drain away and enjoy your easy to maintain beautiful pool! Make sure you order Ben's test kit. That, bleach, CYA, borax, baking soda, and muratic acid are about all of the chemicals you will need. Good luck!