Derek Posted February 3, 2011 Share Posted February 3, 2011 I have two heaters in my tank. I have noticed that one of the heaters is on most of the time while the other one is not on that often at all. Both of the heaters have the arrows pointing to the same temperature points. Is there a way to calibrate heaters or at least sync them up? Quote Link to comment Share on other sites More sharing options...
Gonzobob Posted February 3, 2011 Share Posted February 3, 2011 I recently picked up some new heaters. What I do is put them one at a time in 5 gallons of water with a thermometer and run them till I get a solid temp. Then adjust. Cycle each heater through the same process and they should be calibrated to each other. Quote Link to comment Share on other sites More sharing options...
JamesL Posted February 3, 2011 Share Posted February 3, 2011 Is one in the path of more water flow than the other? The "downstream" one might just be receiving more warm water than the first. Quote Link to comment Share on other sites More sharing options...
Derek Posted February 3, 2011 Author Share Posted February 3, 2011 Both of them are the same distances from the powerheads and the return pump. They are on opposite sides of the tank too. The tank is 5 feet long. Quote Link to comment Share on other sites More sharing options...
DaJMasta Posted February 4, 2011 Share Posted February 4, 2011 Well if the temp is high, you turn down the one that is on all the time.... if it's low you turn up the one that's off. If you like the temp you can turn the on side down a bit and the off side up a bit. Treat the numbers as guidelines, not as absolutes.... even if they're perfectly calibrated, because of different flow and tank parameters, a calibrated heater set to 79 won't necessarily give you 79 degree water temps all over your aquarium. Generally more flow and fewer dead spots.... plus thicker glass or a top.... will make it a bit more consistent, but if you set your heaters to give you the proper output temperature measured at another source, you will be fine. Also since they are so distant, it could be simply that the side of the tank with the on heater is actually cooler than the other. Quote Link to comment Share on other sites More sharing options...
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