N is N, K is K, P is P, S is S. Plant dose not care the source of the nutrients it eats them just the same. The only advantage of synthetic is uptake speed and ratio control. Cook your organics with a proper mico culture and know your recipes have the right balance or spend the money on salts the results are the same. Was raised on salts plan to switch to organics only because I'm broke and lazy don't expect to see any difference in the final product