So, you'll want to start out slowly and gradually with one nutrient amendments like feather or bone food. Afterwards, When you've got mastered the fundamentals, you'll be able to start to blend bat guano with neem, crab, corn, or sixteen other style of organic foods to generate your own fertilizer! https://npk-20-20-15-l-g14780.mybuzzblog.com/9244761/how-npk-15-15-15-vietnam-zero-can-save-you-time-stress-and-money