[dcarch]

Originally Posted by harleysilo

Thanks for posting them!
Have you any idea the amount of light reflected? From what little knowledge I have, I know for example aluminum foil does not reflect as much light as one would think.

Aluminum is one of the best reflecting metals, That's why it is used extensively in all types of reflectors and optics, including astronomic telescope mirrors. It easily reflects up to 95% of incident light. It is incorrect that alum foil does not reflect well (I know some people feel that because foil is too thin).

There is another reason why I use reflectors. UV is used extensively to kill micro-organisms, including water treatment facilities. Have you noticed that most deceases start from the bottom of the plants? The reflectors I use, as you can see reflect light mostly to the bottom of the plants where it is much darker. Whether this is in fact correct or not, I just don't have the space to do a controlled comparison.


dcarch