Coming back to Freshwater Aquariums -- Need Advice

Byron

That appears to be a fully submersible heater, so it would be best close to the substrate, same horizontal position. This way, the heated water will rise (warm rises, cool falls in water as in air). Close to the top the heat will more likely partly dissipate out of the water. The heater will also be more hidden down behind the plants.

CamryDS

I was thinking about that too, but the water that comes out of the filter is cooler than the rest of tank, the filter also has enough umph to push the water around the entire tank so it has enough flow everywhere. I'll try to re-arrange it so it's out of the way, but I'm afraid that the plants will cook =)

Byron

That is a consideration, though the water current would likely be sufficient to prevent this.

CamryDS

unfortunately it doesn't reach the back and the office is sufficiently heated to 70 degs at least.