scooterchick
Fishaholic
It's a really powerfull stream it's kicking out, even on the lowest setting. I'm thinking of a fluval 2+, even 1, unless the one i've got is faulty. It just seems far to powerfull for the tank.
Yeah, the filter's right for the size of tank you have. As others have suggested point it towards the glass. Also as someone else said the fish could be playing, some tropical live in fast flowing water in the wild, they love it! My diamond tetras queue up to be thrown about in the stream, they absolutely have so much fun and it's great to watch!