Medium light for a 20 gallon long
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Old 11-12-2014, 02:26 AM   #1
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Medium light for a 20 gallon long

Would one of these lights give me medium light on a 20 gallon long? or

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Old 11-12-2014, 02:42 AM   #2
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Shorter tanks (like yours) are easier since the light doesn't have to diffuse through so much water. That LED fixture is probably low/medium light territory.
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Old 11-15-2014, 01:05 AM   #3
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I am using the 24" light from that company on my 20 long and get high light. I would suggest getting the single bulb fixture in that brand. If you buy the dual one you will have to raise it above the tank to get the light down. Or using floating plants to cut out some of the light.
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Old 11-15-2014, 12:43 PM   #4
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That Beamswork fixture would be a solid choice. It would be low light on a taller tank but a 20 long is only 12" tall so the light will only be about 11" from the substrate. There's no PAR data available to my knowledge but I'm fairly sure that would easily put you in the medium light range.
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