growth veg new indoor

Can anyone help me! This plant is two weeks old running under a 300 watt led,watered every two to three days. It does not seem to be growing much

Okay, hopefully i can get some help i was given this plant from a "friend" so im unsure about strain and age but i've had it for 3 weeks currently it is sitting under a 400 watt CFL. I am watering it using purified room temperature water. I recently transplanted them to a different pot with new...