heater danger: do not trust your thermostat reading...

[Sk8r]

Heaters are notoriously inaccurate. .Be sure, as seasons change, that you test your actual settings and have 2 thermometers, one for the display, one for the sump. Do NOT believe the numbers on the heater---only what you read on both thermometers. To quote the old captain in "Pirates," regarding the settings on heaters, "they're more sort of guidelines...."

[jvr1102]

I guess my overdoing it was not a bad idea. I have the temp on my controller, a digital thermometer in my sump, my chiller has the temp and just to be anal I have a good old fashion glass one in the tank...think its enough lol?

[cloak]

Don't trust the sticker on the side of the tank or the heater in general?

[Drock169]

The sticker ones on the side of my tank seem to be pretty accurate within 1 degree, its always the same as what my chiller says. Although I dont trust my heater, I kept wondering why my 65G was heating up to 83-4 and I thought it was because of my MH until I put my heater on a controller and now it stays a perfect 80.

[uscharalph]

You've always got do dial in / down heaters. I always trust my digital thermometer.