Not sure how it's calculated but I think Martin @ Modular LED has a way to calculate it.
If you look at a SOL fixture they have 8 pods of 3 LEDs each ( 1 - white, 1 - blue & 1 - royal blue ea. ) & each sol is sufficient for 24" x 24" roughly. If you look at my DIY build you can see what Martin & I came up with for my 8'er. Each heat sink covers 4' obviously & it's reccomended to have 6" difference on all 4 side between tank & heat sink.
Oh and just for reference I built my LEDs to suit my up coming 300 gal 8'er ( 96" x 24" x 30" )
Last edited by The Grizz; 01-15-2013 at 04:25 AM.
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