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Re: [APD] light PC/HPS

>In what format do you require the spectral data. If anything, that's 
>even more difficult to get than the PPFD.

A gif/jpg is enough, I normalize it in Photoshop and the frequencies 
are used relatively if you look into Ivo Buskos calculations.

Most bulb-makers have a good enough spectral distribution images, 
but there are exceptions like Hagen where an "artist" have manipulated
them to make them "look good":

But a Finnish aquarist have measured his own spectral distributions
so you can get a relatively good feel for what the actual output
look like:

Best regards
Daniel Larsson

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