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post #8 of (permalink) Old 01-08-2013, 05:45 PM
Planted Tank Obsessed
Join Date: Mar 2011
Location: Davis, CA
Posts: 358
A double-bright at about 18 inches keeps me comfortably in the low-light range for my non-co2, low-tech set-up. I agree that you may need to double-up on a cube, and that research into a finnex fixture is probably worthwhile.

If you have the money to invest in one, I would recommend purchasing a PAR sensor for a multi-meter. Best piece of equipment I have purchased since keeping planted tanks, and you won't be left guessing on light intensity and coverage. I was running CFL fixtures before purchasing one, and was surprised to find the CFLs were putting me into the high-light range. I think the PAR readings are critical for any DIY build using CFLs.
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