Proactive PKB 16/21 Nutrient Absorption Enhancer Dilute the Solution: Follow the

Dilute the Solution: Follow the instructions on the packaging for the correct dilution rate based on your growing system

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Cable and Ventilation Ports: Multiple cable and ventilation access points make it easy to install fans

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Proactive PKB 16/21 Nutrient Absorption Enhancer Dilute the Solution: Follow theProactive PKB Methodology N: 0. 0 P: 16. 0 K: 21. 0 B: 0. 5PKB 16 21 Professional PK Flowering Additive Proactive PKB 16 21 is a high performance professional flowering additive featuring a completely unique phosphorus to potassium ratio of 16 21, enhanced with added boron to maximize flowering performance and crop quality. Designed specifically for the bloom phase, PKB 16 21 enhances photosynthesis, supports efficient water regulation, and delivers