I have a filter on each side and one side is a bit larger to accommodate the heater.
Hallyx has a great idea: A center, fish-less section for the heater and filter. This also creates an additional barrier should one Betta decide to jump the divider.
Hallyx has a great idea: A center, fish-less section for the heater and filter. This also creates an additional barrier should one Betta decide to jump the divider.