Thx HP. Got 2 bins / 2 400 mh lights. Nutes have been between 180 and 250. After my last grow (over nuted, over heated, inadvertent herming), this one is well taken care of. I have other plant in same bin 6 inches taller yet none of the spindling. Other bin no issue either plant. Hydro ( this is my hobby) soil looks too easy, maybe when I am lazier. Using Flora nova