First time grower... I let my seeds germinate and then i put them in a seed medium after germination.... when they sprouted I had them on 2 20 watt flourescents one cool white, one grow light. They have been up for about a week and now they look very tall and skinny and some are falling over. I moved them to my vermiculite medium. I have a 400 watt hps coming in . Any help with how long before hps lights and why my plants look weak now, any suggestions they would be appreciated. Thanks