Nutrifield PK Heavy
PK Heavy™ contains refined Phosphorous (P) and Potassium (K) which dramatically stimulates robust flowering in your plants. It also contains Zinc (Zn) which aids protein metabolism, helps maintain cell membrane integrity, and assists chlorophyll production. PK Heavy™ is made up of highly concentrated minerals that promote massive flower development which you can clearly see in size and weight after application. PK Heavy™ is compatible with all growing methods and mediums.