Will be gone and don't know what the best way is to manage the tub while I am away. I think I should shock it but dont know if that is too long of a time to expect the shock to last. The tub has 430 gal of water. Our CYA is about 30 last check. I seem to be using up about 6 oz of 8.25% bleach each day when the 2 of us use it. Is my low CYA maybe a problem causing more usage. Should I consider getting some kind of floater to dispence chlorine while I am gone? Thanks for any input on this. Jim