Today I received (6) 300W "Eheim Jager Trutemps." I have had 1,800 watts running in the sump for 2 hours now and the temperature has risen 1.8 degrees (from 60.7F to 62.5F). The air temp in the room is 59F. I have the heaters all set to the minimum (65F) so that I don't increase the temperature too quickly. I plan to crank them up a little more tomorrow.
For every hour all 1,800 watts are running it's costing me $0.61. That doesn't seem like a lot, but if they are on 8 hours a day, that comes out to $146.88 per month (I pay $0.34 per KWhr at the highest tier, which running these heaters will put me in that tier pretty quickly).
Something that's kinda interesting...one of the labels on the heater reads 150W, although it's definitely a 300W heater (It's the same size as the others and I tested it on my Kill-o-watt and it read 290W). Looks like they made an error at the factory and printed the wrong wattage on the heater (see pic below).
Anyways, so I'm testing it out to see if I can keep tropical fish after all. I bought these 300Watters instead of one or two much larger heaters so that I could fairly easily re-sell them in case I decide to stick with cold water fish. Not too many people need huge 1,000 watt heaters, so my thinking was that I could find buyers for these 300W heaters much more quickly than trying to sell a couple 1,000W heaters. They were also much cheaper than the larger units ($155 delivered for 1,800 watts is pretty cheap). If they cycle on for more than a few hours a day to maintain 75F I'm going to put them up for sale on here or on craigslist. I could maybe stomach spending $75/month to heat, but $150 is too much.
I may buy a Ranco temp controller to run all the heaters but I first wanted to see how it went with using the Jager's built in thermostats.
Updates are no good without pix:
Mislabeled Heater: the one on the left reads 150W, but it's actually 300W.
