Whoa...you didn't say ya had a 400, 8 inches away...those little tiny leaves in the close up should keep growing tho...the others....well...pray! You may even want to back that light up another foot until they get some leaves going again, too. Then 18 to 24 inches is as close as you ever need it. Is heat maybe an issue in that box?....I see you have a fan down low...is the light heat exhausted outside the box? Here's a tip on a very small box like this one....a fan pulling air out will create enough negative pressure to draw fresh air in, (usually enough to make them dance a little and that looks like about a 100cfm fan...yes, that's a lot!) so if it's blowing too hard (and if you think it is, it probably is...) try turning that fan around to blow out. If it starts drawing hot air down from the lights, move it up high and let it exhaust. That way it will draw cooler fresh air over the plants.

he he Lyn...I'm pretty sure they were sayin just that, too!