Just wanted to shout to zilla for making a great product. I recently purchased 2 of their pro sol fixtures, 20 inches long. Each fixture has space for 4 halogen or compact fluorescent bulbs, so you can use different wattage to create the perfect gradient across your animal's aquarium. I am using them for my uromastyx, and they create a perfect hotspot of 125 degrees and a gradient all the way down to 80 on the far side of the tank. I would highly recommend them. I would save a bit of money and not buy zilla brand halogen bulbs though. I bought off brand bulbs and they work great to produce the heat needed.
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