The Planted Tank Forum - View Single Post - My inexpensive CFL light solution
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post #191 of (permalink) Old 02-21-2013, 07:51 PM
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Join Date: Jan 2011
Location: Syracuse, NY
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Originally Posted by wootlaws View Post
Is everyone achieving this kind of growth with no co2?

I'm running my drop checker into the yellow range. So yes, LOTS of CO2. Can't speak for others but with close to 70w over a 18" tall 40b it's definitely necessary.
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