[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [APD] light and the w/gal rule




--- Jerry Baker <jerry at bakerweb_biz> wrote:

> 
> . . .PAR is the best measurement for photosynthetic 
> purposes,
> but I defy you 
> to show me the PAR rating on the label of most of the
> lights we buy. I 
> couldn't even get Hamilton lighting to tell me anything
> about the bulbs 
> they sell other than the CRI. Not even lumens, lux,
> spectrum, or 
> anything else even related to the quality and/or quantity
> of light. 
> Using lumens is flawed, but you have to work with what's
> available to you.

The question is whether lumens is any better than wpg using
decent lights. It really doesn't get one much to switch to
lumens, except a bit more math excercise.

sh
> 
> > These run about 550-2000$, not something hobbyist care
> to indulge in.
> 
> I might spend the money on it just to publish the results
> here. That 
> would be a great deal of entertainment for me, and useful
> for others as 
> well. Nothing better than being able to add to the body
> of good 
> scientific data in the aquarium trade. We need it.
> 
> Of course I would probably get an Apogee if I have to
> fund it with my 
> personal cash, but perhaps there is an aquarium club that
> is interested 
> in getting a spherical Li-Cor.
> 
> -- 
> Jerry Baker
> _______________________________________________
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
> http://www.actwin.com/mailman/listinfo/aquatic-plants
> 

_______________________________________________
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com
http://www.actwin.com/mailman/listinfo/aquatic-plants