hello, i just set up a brand new 38 gallon aquarium. currently still running all the appliances getting the ideal water condition to start the cycle. i have my heater set to heat and maintain the tank at 76 degree's. so far the tank has been set up for 18 hours now. the temperature has dropped around 70 degree's i still have no activity on the heater. I'm not quite sure what is going on. not sure if this would be a normal behavior or not if anyone has any suggestions and so forwards please reply. thanx.