Roots Organics HPK

MSRP Price: $1.00$589.99

Roots Organics HPK liquid bloom booster features a combination of seabird guano and phosphate rock, renowned as unparalleled reserves of available phosphorus, combined with langbeinite, a powerful source of potassium and magnesium that is carefully mined from ancient sea beds in the desert of the American Southwest. Roots Organics HPK is minimally processed to preserve all the benefits and amazing synergistic qualities of the ingredients, and works well in coco soil blends.

HP2 and HPK are Roots Organics’ two liquid guano boosters. HP2 is pure phosphorus from liquid seabird guano, while HPK is phosphorus from seabird guano supplemented with potassium from the mineral langbeinite. Roots Organics separated the two products because coco, which is often present in quality potting soils, has a high cation exchange rate with potassium. It is not a good idea to add too much potassium in a coco heavy medium, hence offering pure HPK as a separate option.

Derived from seabird guano, phosphate rock, and langbeinite.

Direction for use:

Soil or Hydroponics

Add 1 TBS (15 ml) per gallon. Use during fruiting or flowering.