I decided to continue use of the Jacks Ultraviolet all the way to the finish line just to see if the product can carry the plants nitrogen needs through the ENTIRE bloom portion of this grow and note the results. The soil had a nitrogen content of 10 to start with, so we'll see. The ONLY thing I do to my autoflowers in this system is to top them around week 2-3 of it's life (veg phase).