Synirr
"No one is a failure unless you try"
I've always been afraid to accomplish 5 watts per gallon of heating with just a single heater, and today I was reminded of why. I reached in my 80 gallon to remove a leaf my oscar had torn off a plant, and the water felt EXTREMELY warm. Too warm. Sure enough, the thermometer read 86 degrees... which is the highest that cheap thermometer goes, but it was definitely more in the range of 90. My heater had broken and wasn't cutting off. Thank GOD it was about 3.75 watts per gallon instead of 5, or my midas hybrid and oscar would have been cooked!!!
Let this be a warning to all of you.... instead of one big heater, use two smaller ones. That way if something goes wrong, all you have to worry about it getting a new heater rather than new fish.

Let this be a warning to all of you.... instead of one big heater, use two smaller ones. That way if something goes wrong, all you have to worry about it getting a new heater rather than new fish.