The power of a 1:3 PK ratio unleashed!

This product is currently available exclusively in Europe and is a new and improved version of our HammerHead legacy.

Go beyond the standard PK booster with Hammerhead, a tried and tested flowering booster, rigorously researched and tested on the type of plant you grow. With the ideal 1:3 PK ratio your crops crave, HammerHead boosts flower production to reward you with the lush, potent, sizeable harvest you deserve.

Zero added nitrogen protects your plants from the dangers of nitrogen toxicity.

An optimal 1:3 PK ratio is required for increased yields of dense, potent, flavorful flowers.

Potassium citrate maximizes nutrient uptake without the toxicity of common chelators.

HammerHead has been specially designed to pair with our Sensi Terra™ Base Series. It is also completely compatible with all Perfect Base pH base nutrients, as well as all Perfect Base pH-free nutrients and supplements, and all competitive base nutrients and supplements.