FishGoneWild;1146099; said:I put my heaters right next to the HOB intake strainer. My theory is that the heaters warm the water and the HOB disperse the warm water.
Merbeast;1146544; said:Convection (warm water rising from the heater) will create a soft current of its own, so you can place it anywhere in the tank and it will eventually heat all the water. IMHO, it does work better/faster/heat more evenly when it is in or around a fast moving current (like in front of a powerhead).