Re: Demystifying Lighting

>IMHO you guys are making this difficult for non-scientific folks reading
>this list to understand. In typical aquariums with sufficient lighting
>to grow plants, the 1/r**2 approximation for light intensity does NOT give
>a good approximation of how the light varies in relation to the distance
>from the source. 

Instead of trying to figure out theoretically how much light reaches our
plants, with all the complications that entails, why not just get a light
meter. Wrap it in plastic and hold it where your plants are. 


Greg. Tong
gtong at sirius_com (delivered by Cyberdog)
San Francisco, CA, USA

"Every infinity is composed of only two halves."