Thanks for this helpful link, Roy. Indeed, I do hope that a heavyweight grower comments. The info I am getting is incomplete and no one at a pet store agrees with each other. I have room for two bulbs. I just need to know what the best combo is and why. I am leaning towards a 6700K and a 10,000K again but really have no good reason. Thanks again. Shango On 11/23/08 8:22 AM, "Seattle_Aquarist" <Seattle_Aquarist@comcast.net> wrote: > Hi Shango, > > Here is a link to APC concerning light spectrum and growth. > > http://www.aquaticplantcentral.com/forumapc/general-aquarium-plants-discussi > ons/55756-light-spectrum-plant-growth.html > > (You may have to cut and paste) > > APC has a forum just dealing with just lighting and plant growth. "mackers" > comment on 5500k makes sense, the lower spectrum promotes flowering not > growth. Maybe Paul, Erik, and some of our other "plant people" could share > what they think? > > Roy > > > > > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member > -- Shango Los ::Development:: Listing and Marketing Specialist, Partner Alchemy Real Estate Marketing and Development ::Internet:: Fourthfold Visions, LLC www.OutdoorLovemap.com :: Fine Art Portfolio:: www.ShangoLos.com ::Twitter:: https://twitter.com/shangolos _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member