Seeing as how I just broke one of my heaters, I need to replace it. I need a submersible heater that I can put in a very large sump compartment as I don't have the option for a in line heater on this set-up.

Just wondering if anyone has used the Acc-therm heaters made by Colbalt Aquatics (link below). A friend of mine is using one and likes it, but I was just wondering if anyone else has used them before. What really caught my attention (other than one recommendation) is the 3 year warranty.