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View Diary: UPDATE x3: LED Lightbulbs Finally Ready for Prime Time! (282 comments)

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  •  I've got some Coralife Aqualites over my 100 (1+ / 0-)
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    gal reef tank, and they are great and already paid for themselves in just 2 years of use.  However, given how bright and concentrated that aquarium lighting needs to be, heat is still a bit of an issue (but not as bad as for halogen lamps).  LEDs are semiconductor chips, and just like CPU chips or RAM chips they heat up in proportion to the electric current coursing through them.  Most definitely not cool to the touch.  So aquarium LEDs still need to be designed with heat sinks and fans, depending on the overall wattage of the system.

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