Okay Marty, I have had a look at Tullock's book. I am afraid it is a bit complicated, so I will give you the condensed version. In 1999 he felt that 10,000 lux at the surface of the water was adequate for most marine organisms. Now Lux is Lumens per square meter. Convert the area of the surface of your tank to square meters, and multiply that by 10,000 to give you the number of Lux required. We have not taken into account the depth of the water, or dirt in the water. We have at this point only looked at the number of lux at the surface.
That is the best I can do for now. Let the arguments begin. Remember though, I am giving someone else's recommendations.
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Bob
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To be loved you have to be nice to people every day - To be hated you don't have to do squat.
---------Homer Simpson--------
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