Sooooooooo, my boss has a bamboo plant in a small pot. It is getting too big for said pot and needs a new home. If I fastened it to the top of the tank(MY 10 gal office tank) somehow with only the roots in the water, how would this affect my fish? Is it safe? There is enough light for it to grow there, as the tank occupies what was once the bamboo's spot for 2 years, so that is not an issue. Iffins its OK to do, I should be able to figure out a way to attach it, but I am open to suguestions 
