You're rivaling Smellie for betta total here.
Diablo: Yeah, definitely overfiltering. But there's some kind of gunk/algae on my plants and every time I move the plants, it swirls around the water. Trying to get the water as clean as possible. I'm not sure, I think the stuff may be from the fertilizer I put in.
As for Top Fin filters, I don't think they're very good because it's Petsmart's own personal brand. I've heard they are noisy and more than one hasn't worked at all and has overflowed.