Posting again with more info on the plant- I water it every three days with nutrients (root grow and humbolt golden tree) and its vegging (lights on for 18 hours with fans). None of my other plants seem to be having this problem. Growth hasn't been stunted either, new leaves look fine. Just trying to figure out what this stuff is on the leaves. Thanks again! Sent from my iPhone using Grasscity Forum
Did you get any of the water on the leaves while you were feeding? It looks like nute burn. Just gve it plain water for the next week, your soil has enough nutrients to sustain a plant that size.