Just because I am feeling argumentative
Khai said:
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Quote </td></tr><tr><td id="QUOTE">I would like to add that you have either a High pressure sodium lamp OR a Metal Halide lamp.
There is no such thing as a Sodium Halide lamp.[/QUOTE]<span id='postcolor'>
Actually there are Sodium/Halide bulbs. They are made by a company called AgroSun and are wonderful in that they provide a more balanced spectrum, so you get the blue needed for growth and the red needed for flowering.
As far as the glass vs. paint debate is concerned MrMiller covered most of it in his long post. To sum up, a mirror is ultra reflective or else you could not see yourself in it. The image in a mirror is called a reflection for a reason. I do think I know where your confusion is coming from though Khai
Khai said:
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Quote </td></tr><tr><td id="QUOTE">with a mirror the light is sent through the LEADED glass and then hits a reflective LEADED backer which it then bounces off of and passes once more through the LEADED glass, then it may proceed to you plants leaves.[/QUOTE]<span id='postcolor'>
Your problem was defining the glass as LEADED. Leaded glass dose have absorptive tendancies, but mainly for UV. That is why it is used for houses and cars and such. Your typical mirror however does not need to worry about dealing with UV and so is not leaded.