Product description
Advanced Nutrients HammerHead 250 ml – PK booster for mid to late flower, trial size
First time adding a PK booster, or growing in one small tent? With 250 ml you see how your plants respond in the weeks they fill out, without buying more than you need.
What's inside
HammerHead is a liquid PK booster with an NPK of 0-4-12, a P:K ratio of 1:3 and no nitrogen. The potassium comes from potassium citrate, and pH Perfect technology means no extra pH adjusting when you run it with Advanced Nutrients base nutrients. It's made for flower weeks 3 to 7 in hydro, coco and soil.
What 250 ml gives you
At 2 ml per litre this bottle mixes about 125 L of nutrient solution. Spread over the five weeks from week 3 to 7, that's roughly 25 L of feed per week, a comfortable amount for a few plants in a small tent.
Measuring small amounts
For one 5 L watering can you need 10 ml, so a small syringe or measuring cup does the job. Shake the bottle first, add HammerHead after your base nutrients, stir and check EC. Stop after week 7 and follow the Advanced Nutrients feed chart for the rest of the cycle.

