Athena Blended Line PKAthena Blended Line PK Athena Blended Line PK is a bloom boosting complement to our Bloom fertilisers. This clean liquid booster is designed to supplement during the mid to late flowering phase. Athena PK is a low nitrogen booster that provides additional phosphorus and potassium that high yielding plants require for maximum production. Many PK boosters add far too much of these elements and create a cascade of problems, such as reducing calcium and