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Originally Posted by UnderWorldAquatics
isnt silver one of the most reflective materials???
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silver is not one of the best but it is good, the problem is there is a coating over the film in mylar and it severly reduces the reflectivity. I think my info peggged a very high quality mylar at about 83% reflectivity.. on the same token a nickle coated spectral aluminum has a reflectivity in the range of 98.9 to 99.3% (about the best you will find)
I have melted mylar with NO tubes so I gues it all depends on how much room you have to space it away from the bulbs.
Steve
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