I just got him the other day. I think he is cute.
i keep mine in 3 gallon eclipse tanks. I've heard a lot of reviews that say the filter is a little strong for bettas. I usually put mine on after water changes to clean up the water. When they swim by, i see them getting pushed down by the filter current so i started shutting it off. I also put my ear to the tank and heard a vibration, but i think it was coming from the combination of the heater/filter. I'm not sure why, but when the heater isn't in it, the filter doesn't vibrate. So i'd say, if he's dealing well and there aren't any loud vibrations to upset him, it should be ok. I've notice with Bluey, tho, that he builds larger nests sans filter. I think the filter keeps blowing them away...I have a five gallon eclipse tank. do you think the filter is ok for the betta? it doesnt seem to have allot of motion. he often swims through it and makes bubbles.