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post #3 of (permalink) Old 11-17-2012, 07:46 PM
Algae Grower
fish878's Avatar
Join Date: Oct 2009
Location: Springfield MO
Posts: 51
You can buy neutral density filter sheets. They are cheap and the .5 nd sheet will reduce your light about 30%. is where I bought mine for my 48" T5 HO. I just didn't have the ability to raise my light and this was a nice alternative.
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