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Discussion Starter · #1 ·
I have four newish 32 watt T8s in crap shoplight fistures four inches above the surface and 24 inches above the bottom in a 48x18x24 80 gallon. Where abouts does that put me? I have looked at all of hoppy's charts and stuff, but I would like a little confirmation. I think I am at the high end of "low light" at around 20 umm... what are those units called? umols?
 
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