those are some lanky plants.... how old? also it looks like u started to top the plants or something like that cuz u have some weird angles growing there. u probly shouldnt top or fim ur plants until they are much older id say.... i did mine at around 4-5 weeks old.... your seedlings that are coming up are probly fine sometimes it takes a while for them to drop the shell thats around the grow tip. now this is all from what i can see, and im no expert myself... but seems like your doin ok for urself. absolutely, positively, multiply your lights though man.... i have a very low end setup, but i at least run 20-25000 lumens man and still i could do for some more lights.