I have a 10 gallon tank set up with a tank divider dividing the tank into 2/3 and 1/3. The tank has been running since December.

On one side (2/3) I have guppies and tettra on the other side I have a male betta. The filter and heater are on the larger side. I have noticed that with the divider the water on the betta side gets a slight film on the surface and I am concerned that maybe it is not filtering enough due to the divider.

I would like to put an additional small filter on the betta side of the tank to ensure that his water is just as good as on the larger side of the tank. My concern is in finding a small filter that won't add too much current to the water so that the betta is comfortable. Can you recommened any filters that would work in this situation.

Thanks you,

Larissa