I haven't used a 25000k myself yet.
I am a noob who has spare time and no money.
And I wanted to research abit before I spent money on useless hardware for flowering.
I not seen results with my own eyes either.
But yes.
I would assume plants grown with 100% 25000k would be short stalky things.
This is what I want for indoors.
Who care how big and lanky your plant is?
That just means the nodes are stretched.
(and when you start flower it will stretch anyways)
I would not veg a plant under 100% 25000k.
Like mention, probably a little to short for those of us who are happy to watch them grow.
But a healthy 1/2 & 1/2 of 25000k & 11,000k 0r 25000k & 6400k should be awesome.
I would definitely not flower 100% with 25000k.
But again, 1/2 25000k and 1/2 2100k (and if you are rich, 100% 2100k for the last 2 weeks) looks like the best hypothesis to me.
I think (don't know anything) that this would make CFL's produce some HPS looking buds.
Look at the Nlite kelvin graphs in the "ask kelvin" thread.
But again.
I am a noob.
What do I know.
I was just trying to find some facts so I could get the best chlorophyll absorption and the most for my money.