Thanks for your thoughts. I do have a 12v pc case fan from a server sucking fresh air into the case. The lids have a deliberate gap to let the air in. I tried turning the fan the other direction, and it instantly knocked over half my seedlings. I have also recently added two 30w halogen bulbs on...
I'm pretty sure this is in the correct topic.
I have built this box:
http://danman1453.wordpress.com/2012/05/12/indoor-uv-grow-box/
It worked up until I got some seedlings up, then it kind of stopped progressing. I have parsely, chives, 1 iceberg lettuce, and some kind of baby carrots. I jumped...