Sorry, I heavy stress train with a fan, when my seedlings pop I wire them down and train, I bealive it tricks your seedlings to thinking there new environment is windy and if they don't get there roots down quick they will get blown away, I leave a nice loop around the stem they don't like touching metal after a bit there stem hardens and the seedling will stand straight within the wire, after that's over I allways have a fan on them lst, and to displace heat, the main stem on my big NL is very large, it is to big, I should have toped her, I allmost dropped it a few weeks ago, broke 2 branches toped 1 branch now have 2, plant has not slowed 1 bit, 42 inc at 35 days, about to outgrow her space and she still shows no sighn of stopping, I call the other one little but it's normal size for her age, she will turn out nice I can tell, I have not decided what to do with the big one, soon she will out grow her light, in fact it's the biggest NL auto I have ever seen, sux I allmost dropped and messed it up.