So, one question came up on another fish forum concerning the role of beneficial bacteria (BB) in the water column. The other forum which can safely be characterized as a Nitrogen Cycle hub, the insistence is that BB only exist on things : the bio-media, substrate, decorations, etc. And, that the water column has to be filtered through it. But, I question that since I've had no filtration for almost two months and cycled fairly quickly (two weeks) with nothing more than 7 gallons of standing water and five zebra danios. Oh, and four lucky bamboo plants. Is it possible for lucky bamboo to convert that much ammonia that quickly or can "floating" bacteria contribute its share to the nitrification process?