Quick Question : 2500k vs 2700k. How big's the diff for a PC frow, 3 lights, 1 plant.

Hey all,
I've been recommended to post this Q in here. Just about to start my first PC microgrow with CFLs, have used HPS in the past, so in new territory here. I'm lookin at going pretty much straight to flower from seed. I've been recommended 2700k's and have been down the local hardware shop today and found a bunch of 24watt 2500k's going pretty cheap, but don't know if they'll do the job, or if I should source the 2700ks instead. It'll probably mean going online to get them, and I'm assuming we all know how useless stoners are at waiting to get things done, when they could get done today.

So any advice? Will the 2500k's be noticeably worse than the 2700k option? I've googled it a bunch of times, and found a ton of threads using either type of light for flower, but dunno if that's just a bunch of newbs using the 2500's or not.

Cheers,
mewk.x

as far as i can tell, cfl's with a kelvin less then 2700k are pretty rare, and not too cheap
2500k in principle should be good, but a cheap price is something to be cautious with, often there's a reason why they're cheap

Maybe it's a UK thing? They're certainly not a cheap brand, and they're not in a cheap shop either. But they've gottem on buy one get one free at the moment. I searched their pretty big selection but couldn't find one 2700k bulb.

Here's a link to the bulb. http://www.amazon.co.uk/OSRAM-DULUXSTAR-Lumilux-Bayonet-Comfort/dp/B00A9DTYO6

What's the actual range for flowering, best I can find is one or two mentions to 'somewhere between 2000k and 3000k' so I'm assuming that 2700k is the 'sweet spot'.

2500K it is, interesting, like you say it may be a country preference deal
my guess with the 2700k being so often recommended is its prevalence in the USA
the thing with kelvin is that in fluorescents it's an approximation, if that's the right word
a black body emitting surface, such as an incandescent bulb will produce a smooth range of colors up to the top kelvin number, it shows that way with a prism
look at fluorescent in a prism and you get discrete bands, i.e. the sprectrum is dominated by some number of points in the spectrum
which makes fluorescent choice very important, i did some reading on it a while back but stopped after i started getting decent results with the bulbs i was using

Holy crap! You guys are getting ripped on your CFLs. 4 to 20 quid for light bulbs? Here they're a dollar or two, that's around a pound a piece. You could vacation here, bring back a suitcase full of CFLs and make your money back, easy.

But your Kindle books are way cheap.