Cheers Cranker. I am looking at maybe going to 2x42W 3500K for flower. Just going to be hard to change bulbs when it comes to flowering time! Also will need a PC fan and DIY carbon scrubber later on.
Maybe also a small diy yeast/sugar Co2 generator on a passive intake. At the moment, my venting involves leaving a door open! However, at the moment, temps don't seem to be an issue, even with doors closed. More worried about Co2 exchange. It is getting colder here in the UK now.
Still, I only knocked this up yesterday so probably lots of refinement needed yet!
Not expecting it to take off quickly as I only put 2 newly rooted clones of Violator Kush in that are only just showing roots out of the Root-Riot cubes, so on 1/4 Nutes that are mixed up of a few things I had lying around (bit of Canna aqua flores, some houseplant fert with some micro nutes to make up the N and a pinch of Epsom salts to make up for the lack of Mg and Su in the houseplant fert!)
All in all, if I get an Oz, that'll do. If I get 2, I may look at doing something similar with my HPS system.