The Planted Tank Forum - View Single Post - LEDs made easy-ABC of LED.
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post #3 of (permalink) Old 12-06-2012, 03:07 PM
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Join Date: Dec 2005
Location: Sacramento, CA
Posts: 20,261
Good write up, but I don't agree at all with the "rule" about how many LEDs to use. You can use various numbers of LEDs, depending on their power, on the configuration you use, the optics you use, how far they are from the top of the tank, etc. Here is one empirical way to determine the number: One Way to Design a Planted Tank LED Light

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