So, you will need to start off slowly but surely with one nutrient amendments like feather or bone food. Later, When you've got mastered the basic principles, you may start to mix bat guano with neem, crab, corn, or 16 other type of organic foods for making your own fertilizer! https://n-15-1979245.rimmablog.com/29150467/the-smart-trick-of-npk-15-15-15-vietnam-tape-that-no-one-is-discussing