Check out this guys water purification "tablets"...

[bubbadreier]

http://www.youtube.com/watch?feature=player_detailpage&v=wg8J2a20CVg

 

[Chicknladee]

Pretty cool. Nice concept. I don't like the idea of putting bleach in there but maybe pool shock

 

[bubbadreier]

I like the idea of pool shock as well but pool shock can be very dangerous. I have been in the pool business since I was 15 and I have seen some crazy stuff with shock. Just be super careful!