Ultimate PK


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Ultimate PK is a unique Phosphite based bloom stimulant formulated for the last weeks of flower development. Phosphite is an extremely bioavailable form of Phosphate that promotes healthy root systems and helps insure proper nutrient intake and plant health late in the bloom cycle. Ultimate PK is specially designed to act as a hardener, bulker, and ripener to push your production to the limit.

ULTIMATE PK is responsible for:

• Larger and harder fruit and flowers with the best possible aroma and flavor

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Additional information


1 L, 5 L, 10 L, 20 L, 60 L, 120 L, 200 L

Thank you for your continued support of Grow Green Garden Shop until the virus is contained we are only doing curbside service.

Give us a call at (865) 249-8259 to place your order ahead of time.
Thank you & stay safe and healthy!