Aquatic Plant Central - View Single Post - Proper Wattage for Aquariums
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Old 12-04-2006, 01:10 PM   #3 (permalink)
hoppycalif
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I use 110 watts of AHS light on a 45 gallon tank. I successfully grow and get good color in Ludwigia sp. Guinea (high light plant), Hemigraphis traian (high light plant), Blyxa japonica (medium light plant) and Alternatheria reinickii (medium light plant). So, my experience suggests that the lighting needs for a 40 gallon tank are less than you listed.
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