cindygao0217 Posted February 15, 2015 Report Share Posted February 15, 2015 I have a 20 tall tank how many long does the light has to to be size this tank CharlesWex 1 Quote Link to comment Share on other sites More sharing options...
ANBU Posted February 16, 2015 Report Share Posted February 16, 2015 24 inches Quote Link to comment Share on other sites More sharing options...
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