Growing organically is about growing sustainably. These nutrients are naturally sourced and contain ingredients like fish & kelp. Organic Fertilizers are normally designed to work with soil that already contains mineral nutrition or compost. Organic liquid fertilizers are often designed assuming the grower will benefit from the macro & micro mineral content already available in the soil. The benefit of organic fertilizers is they bring organic material into the soil, which leads to an improvement of the soil's structure and microbiology.
For less experienced growers, we do not recommend using organic fertilizers with inert growing media. (Ex. Coco coir, Rockwool, Water culture, Sterilized Peat)