Help with first time plants. I'm not sure what i am doing wrong.

I planted these babies on December 26th and they seem pretty small to be about 2 months old. They are under the 75 watt cfls that run all day long. I water them about once or twice a week and they are in, give or take, a 1.5 gallon pot. One day they were fine and flourishing and the next, half of the leaves had shriveled up and fallen off. I didn't do anything to them and then they just started growing back as if nothing had happened?! I'm not sure what I am doing wrong but something is going on. Also, when should I expect for them to start budding and how do I start to cure the plan when that starts. I'm not sure about the flowering and vegging process either. All information welcomed and even links to other threads. Thanks!

double post?

Perhaps Leaf Miners. That's what it looks like to me. They are small pest that can be killed. Turn the leaf over and look at them with a magnifying glass and check for bugs.

They look ok.... bugs?? What leafs feel off the bottom set?