130w 6700k straight pin cfl
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Old 01-14-2015, 05:13 PM   #1
smokinsam
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130w 6700k straight pin cfl


I have 2 65w 6700k cfl on a 55 gallon.
130 watts total. 2.3 wpg.
Does the watts per gallon apply for these type of lights?
And what category of lighting would this put me in as far as low, moderate etc..?
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Old 01-14-2015, 05:37 PM   #2
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I guess I should add that I have 2"-2 1/2" of substrate in it. so I'm sure it's more around 50 gallons of actual space.
So probably more around 2.6wpg.
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Old 01-14-2015, 07:43 PM   #3
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Tank volume does not matter.
Think about it - it is all about the intensity of your light and how far away the target you are lighting (plant) is.

WPG was a general rule back when everyone just used T12 and T8 tubes. It is certainly not a good way to figure out if your lighting levels are adequate. The lighting game has changed and now lights can put out a lot more PAR per watt. Check out this thread:
http://www.plantedtank.net/forums/sh...d.php?t=184368
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Old 01-15-2015, 12:55 AM   #4
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Yeah. still confused. Lol
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Old 01-15-2015, 12:59 AM   #5
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I guess it's gonna have to be trial and error.
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