Which one is better uvb? The tube type or the bulb type?

method89

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Always the tube type... HO T5 bulb and fixture
 
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wellington

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Never the Coil type bulbs.
About a year or so ago, the mercury vapor bulb has been discovered to be too drying and still causing pyramiding even when raising in a closed chamber.
So the best is the tube florescent. The absolute best is tube florescent with a uv meter to keep tabs on amount of uv produced.
 
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