Love these heaters as I now have 3 different watts. in summer, but in winter I had to switch to a 50W blue daylight bulb. In case anyone needs help, my house is 68 degrees Fahrenheit and a 25 watt daylight bulb kept my 18" 18" 24" at about 70 degrees after a few hours of initial setup. A 50 watt daylight bulb keeps that Tank warm between 76 F - 85 degrees F. This is perfect for my white tree frog.I ordered a 25 watt red night lamp but it didn't work.However the lightbulb didn't work before as I never had one. It didn't heat terribly and didn't break just flickered and turned on then never came on again.work and got either a replacement or a local refund I decided I didn't need a lightbulb at night as it was warm at night enough in my house so i got a refund overall i highly recommend these bulbs i have been using them for several months no problems at all very safe and effective and a good price too.
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