The Planted Tank Forum - View Single Post - LED floods for 45g high light
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Old 01-26-2013, 07:30 PM   #3
james1542
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2x30w's will be better than 3x 20w all day for growing a carpet. To be sure your going to have high light at the substrate, you might need to go with 2x 30W, or 1x50w. Maybe spring for the 50w and then you can just get another one when you upgrade to the 90 gallon.
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