The same ole same ole. Some hydro grower shows a pic and 20 people go through the alphabet with their guesses on what's lacking. Cal-Mag, Phosphorus, nitrogen, lions tigers and bears. Of course I know you can buy mineral salts and mix them up yourself but lets be honest, how many people do that (the four of you here who do that just keep silent). The rest of us pick our brand and adjust the ec, depending on the plant they are all going to be decent some might be a little more hungry for something than others but they are all going to make bud and if you got some ugly leafs at the end who cares?