dual spectrum cfl's???

hey iv ran across a couple things online about dual spectrum cfl's, i was wondering if anyone has personal experience from them or knows anything more about them. from what i found, they are cfl's that give off both [FONT=Verdana, Arial, Helvetica, sans-serif] BLUE 6400K & RED 2700K[/FONT] spectrums separately (alternating bulbs in large wattage cfls), or they try to target a purple range (mix of red and blue) in all bulbs
heres a couple adds i found for them:

http://cgi.ebay.co.uk/300w-Dual-Spectrum-CFL-hydroponics-reflector-grow-light_W0QQitemZ280434774615QQcmdZViewItemQQptZUK_HomeGarden_Garden_PlantsSeedsBulbs_JN?hash=item414b371257

http://cgi.ebay.com/25000K-Biotropic-dual-spectrum-CFL-grow-light-250-watt_W0QQitemZ160386108945QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2557c1ce11

they look like they could produce some killer bud

hi mate i have two of those bulbs but the 250w and all i can say is they are beasts. they are massive lol

mine are just the 6400k spec, i suspect the dual spectrums would cater for all your needs

go for it buy one!!!

Check out Rosemans tutorial you can find it on the forum page he grows with cfls exclusively and has some great tips and info for you...

damn tam those things are beastly! definately cant wait to get some!
iv read that thread a couple times already, but im just asking about dual spectrum cfl's alone. i haven't seen many reviews or anything about them, i know they've been on the ebay uk site for a little while, but there is only one for sale in us right now. i want to get it but idk if i did or didnt order this 200w cfl the other night, as i cant find the online reciept or anything...stoner moment lol. and i cant tell if i did or didnt yet and if i did i cant afford the dual right now. but im drooling over it