Northern Lights Gardening

Trusted Source Since 1999

ROOTS HPK BAT GUANO & K-MAG 0-5-4

This distinctive organic PK liquid bloom booster is specially extracted from our unique natural sources of phosphorous and potassium. HPK is incredibly effective in improving flower quality and is for use in both soil and hydroponics.

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Online Price : $16.16

Store Price : $17.96


  Volume
  Quart
  1 Gallon
  2.5 Gallon
  5 Gallon

About our Pricing (Online vs. In Store)

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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.

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