still kind of new to lighting. ive been told i need 2x150W 6400k bulbs for growing and 2x150W 2700k for flowering. i got the calculation as well so i understand that side.

things i dont understand is which bulbs do i actually need. ppl have talked about using environlite bulbs, but are there any cheaper ones? i found this site in the UK where their CFL bulbs are about £10 compared to environlite bulbs which are £20 - £30.

link: Fluorescent Light Bulbs Fluorescent Lighting Tubes Circular Tube

can any1 recommend any of them?

if im going wrong somewhere please let me know as i shall be buyin all the equipment for my 1st grow soon and i dont want to get it wrong - or at least understand where i went wrong.

thanks

EDIT: just realised their not the right bulbs myself. kind of know what im looking for now. why do i need red or blue spectrum's though?