I keep my heaters in the skimmer chamber of my sump the heaters don't have to work as hard that way, when water is travelling over and around the heater... when putting a heater into main display, a much larger heater is required due to less water flow and a bigger volume to heat.
I think having 2 slightly smaller heaters is actually safer than 1 big one. My thinking is that the chances of 2 heaters dying at the same time is pretty small compared to 1 heater dying and leaving you with no heat at all...
Last edited by Fesso; 10-17-2013 at 03:50 PM.
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