High quality Phosphorous and Potassium (PK) supplement Encourages heavy and bountiful yields in flowering plants Promotes exceptional quality and taste SIZES: 1 litre, 5.5 litre, 20 litre What is it exactly? Super PK is a concentrated solution containing phosphorus and potassium. The chemical symbol of phosphorus is P, and the chemical symbol for potassium is K (from the Latin  word Kalium). Super PK is a plant nutrient additive for when plants are flowering or fruiting. What does it do then? Phosphorus is a component of the nucleic acids RNA and DNA which are important in cell multiplication and growth. Phosphorus is part of a molecule called ATP which is involved in energy transfer inside cells.  Also phosphorus is an important … Continue reading Super PK