2nd time grow how do they look?

Wats up everyone! new here still also a newbie. This time around i have everything i didnt have my 1st time growing, i have a grow tent grow light bulb and i have foxfarm soil and nutrients also my 1st time with nutrients i havent added any yet as for i think it still too early for the nutrients but excited, im growing critical, and sour diesel both fem seeds. It'll be a week into growing for the critical and a few days with sour. My question would be how do they look? Am i doing good so far? They are under the light for 15hrs a day

Give em more light try 18 hours on instead

15 hours where did you come up with that number? good luck and best wishes is that a blurple? well its a start anyways the plant looks good and healthy