Wow! This suction cup dissipates a little heat. My water level reaches the top of a regular old 75 gallon tank (no strainer), my dragon's sunstone raises it about 3 inches off the bottom. He warmed up enough that he had to move. Got my lightbulb. I couldn't see a reptile in the mini Zilla dome that needed more heat than this thing. prevent the bulb from burning out prematurely. I will definitely buy more (as a reserve). If your house is unnecessarily cold, this is all you need. I'm interested in learning about other colors (I'm thinking about winter time when at night I let my house temp drop to about 20C in the middle of the night. Update, my first lightbulb lasted about 6 months on the timer.
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