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Group: Forum Members
Last Login: 11/17/2009 10:33:37 PM
Posts: 231,
Visits: 747
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| We continue to differ, perhaps as a matter of definition, on the efficiency question and as to whether there's an overall net increase of light entering the aquarium with the eggcrate in place. Certainly there is more light within the orange region depicted above. Would you agree that adopting Sanjay's "Total Incident Par" technique and measuring a grid of points within both the yellow and orange regions shown in the diagram above gives an adequate answer as to the overall efficiency/net increase question? That aside, you raise another interesting point. For there to be the light increase shown in the orange region, light has to be traveling at an angle through that point. That suggests that the eggcrate will result in more side-lighting of objects in the tank than the primarily vertical lighting produced by parabolic reflectors. If I infer correctly from my reading of your numerous posts about light rails, that'd be a good thing. - Mark
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Group: Moderators
Last Login: 11/19/2009 1:09:50 PM
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heehee... I agree that we still differ  And I don't think part of it is a matter of perception or definition. There is either more light entering the aquarium and reaching the targeted animals or there is not. This is about as black and white as it gets. My assertion is that with a grid under light systems that have spreading light (because of reflectors, lamp styles... whatever), there is simply more light making it into in the aquarium where we want it overall. Net gain is my mantra here  My favoritism for moving light points/systems actually does not come into play versus the grid issue since a principal purpose of the former is energy efficiency (using less lamps/less watts) by exploiting directional lighting while in the case of the latter we are all about capturing the greatest quantity of light from traditional lighting (read: less energy efficient static sources). Its apples and oranges.
. Anthony Calfo
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