Fell over

[J3333]

All my plants in one night fell over. Im using rapid rooters. WHen the plants sprouted out of the rapid rooter, I put them under a light. I don't know if I over watered them, because they were going strong with little problems, then in a couple of hours they all fell. Im using a 400w light, 18 on and 6 off. Right before in happen in put the light lower closer to a foot away. I have them standing up with two-picks.

[J3333]

these are some pictures of what they look like. Its not the best quality pictures. I used tape and a tooth pic to hold it up.