PK 13-14 is a dynamic "super-amplifier" an unusual action. This is an extremely s condensed formula containing carefully selected blend of pure phosphorous and potassium, giving exceptional results flowering. This special combination of elements can be called "super-amplifier flowering", thanks to which the plant unusually quickly develops heavier, larger and sweeter fruit. With PK 13-14 professional growers around the world gain a much larger number of flowers.