khobden
New Member
Hi, I'm thinking of getting a 2 1/2 gallon tank with a divider in it for my two male bettas. I'm planning on buying a filter but I'm not sure what to get. Should I just get a regular filter that rest on the top/side of the tank or is and undergravel/rock one better. I know the betta poo likes to rest on the bottom so i'm not sure if the bottom filter would be better. If anyone can give me some advice it would be very handy. Also, with a filter how often will I need to clean out the tank?