Diamond black is great. Id say use it. Its a humic acid, really there are no brands id suggest using but I run, feather meal 14-0-0, Oyster shell flour 37% ca, fishbone meal, 5-16-0, kelp meal, 0-0-1, humic acid, bat quano for bloom, blackstrap molasses, Epsom salt, dolomite lime, fish emulsion...