hey gc heres my issue not sure what it is. the plants white widow. temps 80, humidity 50-60 %rh , rdwc" buckets" ppms around 600 and ph is 5.6 -5.8. lights are t5s in veg. i took a few pics only turned out on one pic the leaf edges appear almost burnt brown isolated about mid plant on bigger fan leafs any ideas what it is i was thinking over nuting but im a little over half strength of what they recommend . any help would be great thanks!