On Monday, November 24, 2008, at 12:00 PM, gsas-member-request@thekrib.com wrote: > I am considering a 50/50 which is actinic and 6000k along with a > second bulb > at 10,000K. > Shango, just FYI, actinic emphasis the blue spectrum which penetrates the furthest into a water column. Based on literature I have read the blue spectrum by itself is not the greatest for plant growth, so its good you are combining bulbs. Its unfortunate that there aren't more varied color spectrum bulbs in compact flourescent group as opposed to the "standard" T8-10 bulbs. Does anyone know if there are any CF bulb companies that produce various bulbs which emphasis specific color spectrums? Clay Anderson _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member