The tank has a small filter but as it is only 1g I leave it off as it produces too much current.I do regular water changes and am careful not to overfeed.None of my tanks use heaters as yet though I do have a couple.But the temp stays around 78 without them and as I have central air the room temp is pretty stable.In small tanks like mine the light alone actually provides a fair amount of heat.once i was a maggot said:hi koda, i really like ur setup and love ur betta, but could you tell me wats in his tank like for heating, filtrations etc. thanx