I sprouted 2 easy ryders and a auto white Russian almost 2 weeks ago. They are in 2 liter bottles filled with soil I got from a friend who works at a greenhouse - it was premixed with vermiculite. I've just been giving water every 3-4 days and leaving them on 24 hour light under 150w hps. The 2 easy ryders are doing great but the white Russian has almost not grown at all for about the past week. It's green and healthy looking, just much smaller. I'll get up pics tonight, but any ideas?