I built my first one. Have never had a bator before and got it plugged in but it seems to be taking hours to get to temp. How long does this normally take?? I've had it plugged in since noon and it's now 4:30. Is that to long? Maybe I need a larger watt bulb. It's a forced air bator with a 40 watt bulb and a reptile hot rock in it. Got temp to 93 so far but 4 1/2 hrs seems so long to still have temp climbing.