I guess what I was thinking is, if I shock after every use, that should completely sanitize everything. How much bacteria is going to grow after the shock, with no organic matter being introduced, in 24 hours prior to my next use? My reason for asking is I think it would be nice to shock with chlorine after each use, then all the chlorine will likely be gone before my next use, and I can enjoy a chemical free hot tub before I shock it again.