PK Bulk is the latest evolution in PK boosters. Naturally, it delivers large quantities of phosphorus and potassium, but this formula also includes an array of plant hormones (derived from natural sources) that work alongside the P and K to promote even denser concentrations of flowers while encouraging the swelling of fruits.

How PK Bulk Works:

PK Bulk is a concentrated PK booster that is used alongside your base nutrient to deliver rapid growth and development during the flowering stages. As well as containing a plentiful supply of phosphorus and potassium, PK Bulk's formula also includes special hormones derived from natural sources that accelerate fruiting while toughening plants against environmental stresses.

We recommend using silicon at the same time, so that your plants can develop branches strong enough to support the weight of the fruits you're going to produce.