well I have a power filter and one of my baby honey gouramis gets caught in the current and the poor lil guy can barely swim right he like gets flipped over by the current and then he goes and buries himself in the gravel a little bit and my dad and I are setting up a 4 gallon for him right now to help him and hopefully he will live with no stress in there. I'm keeping him in there until the day he dies (whether it is tomorrow or 3 years from now) because I don't wanna see him so stressed out ever again! Hopefully he will do better in there what do you think?!?