Bio Nova PK 13-14 Bio Nova PK 13-14$12.30 – $14,200.00 Size Choose an option… 250 ml1 liter5 liters20 liters16 gallon55 gallon250 gallons Clear selection Quantity Add to cart SKU: N/A Categories: Bio Nova, Liquids Phosphor makes for the development of a healthy, extensive root system and an exuberant flowering. Potassium prompts the flowering, the so-called flowering potency.