I have a Black Widow, and a Northern Lights plant that I started from seed. They are both 3 weeks old today. Both plants have good colour, but dont seem to be growing height wise very fast. They are now about 1.5" tall. They both have about 6 leaves on them. I transplanted them once and are now in potting soil in 5" pots. They get light from 300 watt full spetrum LED light, and they are in a grow tent. I think it is actually putting out 150 watts. Tempature ranges from 70-75 degrees with 60% humidity. I water them twice a week. Light is on for 16hours, and off for 8. Light is about 21" from plants. I did have a small fan on in the tent, but decided to turn it off to increase the temp. So, my question is are they at about proper height for thier age, or am I doing something wrong? Thanks in advance for comments, and suggestions.