I thought I'd post a quick update as it's been a few days since my last post.
I made a new cardboard grow box, the other one just couldn't fit enough pots in, and the new one has 2 bulbs in it, which has obviously had a massive effect on the plants. It was sort of a waste of time building the new one though, as I've just managed to get my hands on a wardrobe that one of my relatives was going to throw out, so I'm in the middle of painting the inside white (it's apparently a better reflector than foil, I'll be upgrading to mylar when I can afford it), installing some fans and finding a good way to fit the lights.
All 8 of the jalapeño seeds I originally planted have germinated, and now I've planted 2 more jalapeño seeds, 2 hungarian hot wax and 2 ring o fire. My habaneros are just barely breaking the surface of the soil now too :)
I'll try to take a picture of all of my baby plants when I move them into the wardrobe.
Also, I'm going to try growing carrots because I was given a packet of seeds. I have a couple of those big plastic buckets (I think they're usually used by bricklayers or something like that) to plant them in. That should be fun :)
I think I'll be buying a couple more lights tomorrow, as the new grow space is quite a lot bigger than my cardboard boxes and will need more lights to keep it properly lit. With the new bulbs I'll have 120 watts of CFL, that should be enough while the plants are still small.
So that concludes the update. Wasn't quite as quick as I'd planned.