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  #533  
Old 01/04/2008, 03:01 PM
Garage1217 Garage1217 is offline
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Join Date: Jul 2007
Posts: 467
With a single MH over a 36" long tank, it is going to have crappy dark edges as the light is more focused. A good rule of thumb I have found is...

1MH per 20-24" of tank length.
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