Wow, I thought I had done everything right. I spent hours reading the stickeys, searching topics, etc. I germed bag seed (off purple kush) and started 5 seedlings. I put them in an unheated, unused bathroom. It has a hot water heater in it, and along wityh the lights, I figured it would be be fine. The lights were around 1" away, and to the touch it didn't feel too warm. I didn't have enough money to spend on a decent grow setup, so I spent what I had on lights, and figured I'd add a thermometer/hygrometer later. WRONG move. After my little ones started turning purple, and getting brown on the tips of the leaves, I read through about 10 pages of the sick plants section, and came to the conclusion that although the temp seemed ok, I might be having temp swings. I went to Harbor Freight and bought a temp/hygrometer with my last $10. Good thing I did. Today I checked the high/low and the temp was going down to 55 at night, and hitting 91 during the hot part of the day. The humidity was going from 20-35%. ouch. I now have a humidifier and a space heater in there with a thermostat. Looking back, I would buy a thermometer before I even germed the seeds if I had it to do over again. 4 out of the five will live, but they are really small for three weeks of growth.