I have two Lowryder 2 plants at day 26 in my box. One of the two has started turning yellow on the tips of some of the leaves. They are in good soil, otherwise healthy, and I have fertilized twice using MG for tomato plants (I know you guys dislike MG products) but I have had good luck with MG tomato in the past. I am running eight 26 watt CFLs and interior box conditions are good. Is this a sign of nute burn or do you have any other ideas what is causing the yellowing?
if its at the tips of the leaves i would say its nute burn or if your using tap water it can cause the tips to burn if it has chlorine in it, thats why its good to let tap water sit for at least 24hrs to let the chlorine evaporate.....i could be wrong, im still new.