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So I was wondering if any one has used Cree's as well? I have a ballast or two that I can run 60 led's with the lumen output higher than a 400w mh or hps. The spectrum is mostly in the 450-460 With a little bit of cool white xp-g right now. The xp-g warm white runs in the 3k range And puts out...

I use these Cree xr-e's for my reef fish tanks and know good spectrums and these two seem to bee around the right nm range. So there are thee only THREE royal blue and three xp-g I don't remember what white. They are 24 days old. With 18/6 lighting. What yah think? Ok??