Definition
Fertilizers - refers to either organic (chicken manure, cow dung, etc.) or inorganic (Urea, Ammonium Phosphate, etc.) primarily used to fertilize the pond to produce natural food like lab-lab, etc.
Organic - refers to animal manure and plant waste containing about 40-50% carbon by dry-weight basis usually from pig/hog, poultry, cattle manure, etc.
Inorganic - are simple dominant compound which primarily contain at least 1 or 2 element of the NPK (Nitrogen, Phosphorus, Potassium).