BinaryTerror - You need to FIX your Heater position still.
I just now watched the video and it's in danger of going belly up based on it's location. Lay it sideways to you keep the entire thing underwater. You are like 4 inches out of the water. In order to be at the "Correct" level your SUMP would need to be filled to the top and about 1/4 inch higher.
Based on the tank layout I'd position on the side of the 10gal sump at an angle.