I have a single crown tail Betta in a 2 1/2 gallon tank. The tank is a Aqueon kit that came with a top filter and cover w/ light. The filter seems to create too much current and the Betta fish would not be too active so I purchased a Tom Tom 1-5 gallon filter. I have water flow setting to the lowest setting but the Betta is even less active than he was with the top filter that came with the kit.
When I unplug the filter the Betta becomes very active.
This is the second Betta I have housed in this tank and the previous Betta wasn't a crown tail and was larger than the current Betta. The previous Betta was visibily fighting the current but he was always very active. I assume his size and not being a crown tail may have minimized the issue?
So the question is, do I really need a filter for such a small tank? If so, what type can I purchase that will not create so much current?
I have been doing a partial water change every (2) weeks.