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
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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.
“How is it that nature does this so effortlessly, while our tanks constantly teeter on the brink of eutrophic pollution (like EI) or apocalyptic famine (like PPS/Sears & Conlin)?”
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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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