I just set up a 14 gallon Bio Cube, and the amount of movement generated in the water from the filtering system is incredibly fast. Not only are the plants swaying like crazy, but the few little tiger barbs which I just introduced seem to be fighting to swim against the current. Is this normal, or is this a problem? I also have read that all plantings for barbs should be toward the back of the tank, to leave them swimming room. Right now, the plants are pretty much evenly dispersed on the bottom. Should I move them? Thanks!