I would love floating plant, I have som wisteria right now that came out of the gravel while I was cleaning and before I replanted it I saw my fish swimiing all through it and playing in it so im sure they would like some floating plants
Yes, if you let it. Most people say they wish they hadn't introduced it into their tank because it multiplies so rapidly and it is hard to get all of it out. By the time you realize you have some still left in the tank it has already multipied ten-fold. It is constant pruning with this plant so that it doesn't block out all the light. It is good if you have excess nitrates though or if you don't have any plants under it.