High Light using CFL's in a stock hood.
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Old 04-28-2012, 11:01 PM   #1
Mike Hawk
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High Light using CFL's in a stock hood.


Here is what I would like to know, How far off the surface do I need to raise my stock hood with 2x 26W 6500k bulbs to get high light. I just raised the hood another 2 inches leaving it at 5 inches total above the tank. The water is 8 inches deep from top to bottom incase that helps. I know the chances of finding someone with a 26W bulb supended horizontally 5 inches above 8 inches of water with a PAR meter is slim so I don’t expect a lot but any information would help.
Please don’t tell me to “go read the sticky” I have read it multiple times and it does not mention how to get high light using CFL’s horizontally anywhere on it.
I would mainly like to know how far off the surface I would need to place my hood in order to get high light but any other information would be appreciated.
Here is a little info, 10G tank, 8 Inches deep to the substrate, Stock hood bulbs are 5 inches off the water surface.

Edit: I raised the tank the added 2 inches because i was starting to see a bit of hair algae on my pellia But everything is growing very very fast, I dose fertz EI method, Dose Excel daily and have co2 running at 1bps.
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Old 04-28-2012, 11:33 PM   #2
Relativistic
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I can't remember which thread it was exactly, but I remember seeing a rig with 3 cfl's each in their own dome reflector set downward on top of the glass canopy that seemed to give off a healthy amount of light.
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Old 04-29-2012, 12:55 PM   #3
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check out the thread in the lighting forum called something like, "my inexpensive cfl solution"
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