Yellow Leaf Edges - Potassium? Burning?

[Ganja Guerrilla]

fert burn your soil maybe too hot what brand of soil, or have you fed it fertilizers

Ganja Guerrilla Reviewed by Ganja Guerrilla on 09-06-2007. Yellow Leaf Edges - Potassium? Burning? Using the rubbermaid grow box Any idea what I'm doing wrong? This is from 08/20 seedling. On 16/8 light cycle. Help! Rating: 5