I think bamboo can be good for aquariums.... But It can be very dangerous if it touches the ground...Anthraxx8500 said:i used mine in an open top tank. LOVED the look of it and bamboo placemats grew super well. GL to ya and just do as others suggested and leave bamboo placemats partially submerged. heres a pic to get an idea. after 6 months id say bamboo placemats trippled in size. the largest stood 12+ inches above the water line.