Bamboo? What do you want to do with bamboo? If you're loooking for a natural "cave structure", try coconut shell: 1, Buy a whole coconut. 2, Bust it open. 3, Feast on the innards 4, Either boil the shell for ten minutes, or skip to step 5 5, Put it in the tank. I suppose bamboo of a large enough diameter would work, but it is not really indigeneous to Apisto habitats, if that's where you are trying to go with this idea. Good Luck, Bob Dixon