Ultimate PK is ideal for the later stages of flowering, as it is Phosphite-based and therefore increases oxygen flow to the root. The Phosphite is readily soluble and this helps to stimulate root growth as well as harden cell structure.
Plant Magic oldtimer Organic PK 4-8 is a flowering booster with a NPK of 2-4-8 designed to boost and enhance blooms. During they flowering stage plants need a range of stimulants and boosting agents to deliver those heavier yields
Advanced Nutrient's Big Bud Coco is essentially a mild, early PK with added amino acids. Its NPK ratio of 0-1-3 means that it can be added earlier (than say PK 13/14) giving your plants and early flowering boost. This results in fruits and flowers being larger, more potent and increases the size of your yield. Big Bud is available in 1L.
Plant Magic Platinum Premium PK 9-18 is a flowering booster with a highly complex PK designed to boost and enhance blooms. During they flowering stage plants need a range of stimulants and boosting agents to deliver those heavier yields. Plant Magic Platinum offers enriched bio-stimulants
PK boosters are nutrient supplements for flowering plants that are specifically designed to be used during middle and late stages of flowering periods. ... A PK booster simulates a natural chemical change inside a plant, particularly in the ends of the stems where flowers and fruits develop.