In fact, testing showed that their 13-14 ratios actually reduced bloom weight, size and quality. Worse yet, their products helped create ideal conditions for growth of one of the plant diseases you most hate to see: gray mold.
Our scientists are chronically dedicated to giving you the best harvests, so they figured out that hydroponics plants you grow need large amounts of K, not large amounts of P.
Only with correct ratios of K and P found in Hammerhead will your plants produce the impressive harvests you seek without providing fuel for gray molds that can destroy a harvest overnight.
“As a grower for two of our local coffeeshops, I used a Euro-made phosphorus and potassium booster. I got some increase in yield, but I also saw an increase in the mold and in burning of leaves and resin glands. I suspected that the ratios of phosphorus were incorrect. When I saw your product at the trade show, I thought that this might be a good fix, because your mixture had more potassium. I tried it and the results were larger yield and less mold and less leaf burning and curling. I am adding Hammerhead to my bloom cycle feeding from now on.” - Johan, from Haarlem, Holland
Hammerhead PK 9/18 is the world’s best potassium-phosphorus booster formula. It feeds specially blended, superior-sourced nutrients in just the right ratio so your plants absorb what they need to make the best fruits and blooms.
PK 9/18 lessens incidence of gray mold and other pathogenic attackers that eat crops in late harvest cycle. Other products contain the wrong ratios of potassium and phosphorus that actually reduce yield and cause disease conditions.
When you use our Hammerhead PK 9/18, you get the correct ratio of P and K, from superior source materials, guaranteed to increase harvest size and quality more than any other potassium-phosphorus product, or your money back.

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