You have 30 foot filter hoses?
you know there is a very easy way to clean canister hoses. I am suprised Luvfishies hasn't replied yet, as she showed me how to do it
Hagen (fluval) makes a wonderful little brush with a long plastic flexible "stem" about 4 feet long, you shove the little brush into the tube and then shove the plastic "stem" as far as it can go, which is about 3 feet, pull it out, rinse it, and do it again from the other end of the hose assuming your hose is actually 6 feet, and not 30 feet, you will be fine
after this put a bit of water in the hose, close off each end with your thumbs, and shake it back and forth violently. Empty it out, and presto ! brand new shiny clean hoses
you don't have to worry about losing bacteria by cleaning your hoses.... if you are concerned, just clean out your *output* hose, the *input* ones are not as critical