This distinctive organic PK liquid bloom booster is specially extracted
from our unique natural sources of phosphorous and potassium. Bat
guano, renowned as an unparalleled organic source of phosphorous, is
combined with Langbeinite, a natural source of potassium mined from
ancient sea beds in the American southwest. Carefully collected from
around the globe, HPK is minimally processed to preserve all of the
benefits and amazing synergistic qualities found in our exceptional
ingredients. HPK is incredibly effective in improving flower quality
and is for use in both soil and hydroponics.