The Planted Tank Forum - View Single Post - Why is there no sticky differentiating all these different Lighting Systems???
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post #10 of (permalink) Old 09-09-2005, 10:37 PM
Wannabe Guru
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Join Date: Sep 2004
Location: Seattle, WA
Posts: 1,666
All are quoted as total lumens. Skip the reflector and get less than half!

Note that 1250/20 = 62.5 for spiral compact

Originally Posted by Matak
For the spiral compact, is that total output lumens, (including all that restrike loss in the spiral) or is that usable lumens (as measrured from the outside of the bulb)?

Moved to Tucson.

Last edited by BlueRam; 09-13-2005 at 12:51 AM.
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