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"But a much simpler app would be to install a few 1 1/2 volt solar cells in the light hood to collect reflected light, and run the hood DC computer type exhaust fans. Lights on... fans on.. no need for extra power cord, transformer, and timer."
This is such a ridiculously good idea that I cannot believe hood manufacturers havent already incorporated this design already, you take a look at almost any lighting fixture and i think it is fair to say that at bare minimum at least 10% of the light never reaches the tank, in some metal halide fixtures in can be much more than that though, so I think almost any tank is capable of reusing its dead loss of power. Im off to the electronics store to pick up some fans and solar panels, and im going to pick up a cheap dyno and have a play around with a few ideas towards hydro powered tanks. Should be some interesting results.
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umm like fish an stuff
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