Roots Organics HPK ( 0-4-3 ) | 1 Quart

Roots Organics HPK: Naturally Sourced Phosphorus and Potassium for Flowering Roots Organics HPK (0-4-3) is a minimally processed liquid PK booster that delivers a dependable phosphorus and potassium boost when plants shift into the reproductive stage. Phosphate rock provides a robust natural phosphorus source, while langbeinite — a naturally occurring mineral — contributes potassium from a stable, non-chloride form that integrates cleanly into organic and hydroponic programs without spiking salt levels. Phosphate Rock and Langbeinite for Clean PK Supplementation The pure 0-4-3 profile makes HPK a precise bloom support tool, giving growers the flexibility to increase phosphorus and potassium independently of their base nutrient's nitrogen content. This is especially effective during the transition from late veg into early flower and again during peak bloom when PK demand is highest. The 1-quart format suits growers running single systems or evaluating HPK before scaling to the 1-gallon or 2.5-gallon formats. Key Features Phosphate Rock Phosphorus:: Natural biogenic phosphate source delivers bioavailable phosphorus for energy transfer and flower structure development without synthetic processing. Langbeinite Potassium:: Naturally occurring non-chloride potassium source that supports nutrient transport and osmoregulation during flowering without the salt burden of chloride-based alternatives. 0-4-3 Pure PK Profile:: Zero nitrogen allows targeted phosphorus and potassium supplementation during bloom without disrupting the N balance set by your base nutrient program. Minimally Processed Inputs:: Both phosphate rock and langbeinite are kept close to their natural state, retaining trace mineral character that synthetic PK boosters typically lack. Broad Feeding Program Compatibility:: Works alongside organic and hydroponic base nutrients without precipitation or pH instability in recirculating systems, coco, and soil.