Thread: Minimum Amount of Light Watts/Gal Required?
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Old 03-25-2007, 10:27 PM
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mtfabel mtfabel is offline
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Join Date: Dec 2006
Location: Jeffersonville, IN
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Tank Size (US GAL): 180
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Name: Mike
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Default Re: Minimum Amount of Light Watts/Gal Required?
The depth of the tank also is a factor in figuring lighting. The deeper the tank the more light needed to reach the bottom of the tank. I have a 180 AGA with 3x250w HQI and 2x165w VHO. If you do the math this is exactly 6 watts per gallon. I have lots of SPS and all are doing well. Growth is slow at 6 watts though. In the future I will be purchasing 3 more 250w HQI. I may instead get 2 more VHO which would give me close to 8 watts per gallon.
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