Soil grow week 4

Hey my fellow growers ive been goin steady with my four plants just topped the big girl and she is healing good and getting good growth in the new nodes i just transplanted it into a 5 gal pot with fox farm soil and praying it works out good just wanted to show my pix and was also wondering when would be a good time to put em under a HPS light? Right now I have them under a t5 blue and red bulb fixture and fluorescent shop lights with plant bulbs