i have a 2.5 gal aqueon mini bow tank for my betta and was wondering if i should remove or keep the filter and just change the water weekly. basically because 1. my bettas tail got stuck to the side of the filter, nothing lethal, he got unstuck right away no damege and 2. when i feed him some of the food gets stuck to the side of the filter also making it impossible for him to eat and i have to unplug the filter just to let the pellets loose. any ideas or suggestion??? thanks!!!