I re-tested my heating module. I did the following tests:
Heater in bucket alone.
Heater in bucket with powerhead moving water.
Heater in module with powerhead pumping water thru it and back to the bucket.
My powerhead didnt heat up the water much, if any.
I would bet your heater is faulty.
The world is a tragedy to those who feel, but a comedy to those who think.
Horace Walpole (1717 - 1797)
Nearly all men can stand adversity, but if you want to test a man's character, give him power.
Abraham Lincoln (1809 - 1865)