Skunk #1 autoflower 1st ever grow

You got some Sulphur deficiency going on Before adding supplements to a plant's root zone, check the pH level of both the soil and/or the water solution (especially hydroponics) for plants. If the pH is high then it can be helpful to buy and carefully use a sulfuric acid-based fertilizer to both re-introduce sulfur, as well as bring down pH levels. If pH is within a normal growing range (5.5 to 7.0) then using Epsom salts would be a good source of sulfur for watering/hydroponics. In soil-based grows or outdoor grows the use of gypsum is good for sulfur introduction, but you may also use sulfate-based fertilizers such as ammonium sulfate or calcium sulfate, among others. If you have access, manure could be a great organic option as well.

Its whatever you're giving is having a clash. I think you at the stage. Where you need to just v feed her water. And let her eat herself free by soft flushing. As I doubt it's lack of with what and the dose of what you're giving her. I personally think. Its from 2 many feeds and she's locked herself out. As if you are feeding more than twice a week and not following up with water feeds. Even with coco. I follow up with a water feed every day after her feed at the start of the day. As what's left behind is residue as that has PH makers in her.. also from leftover feed the EC is to high. Only reason I can think off. How often are do you feed