LSD Again!

Nute burn always starts on the tips of the leaves and this is pretty much a textbook example. In your previous question it was in early stages and now it's getting worse. Just give her plain water to dilute the nutrients in the soil. When you let it dry the nutrient concentration gets higher. For example... If you put 5ml per liter and your plant drinks 500ml water and 100ml evaporates and your plant only ate 1ml food 9in the 5 days you didn't water), you now have 4ml food in 400ml water. This is why the dose is low when feeding small plants. They don't eat as fast, so if you feed too much, the plant will burn by the time you need to water again.