Pay in 4 interest-free payments of $8.99 Learn more
Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Improves Overall Plant Health: Supports robust growth and resilience
and consistent harvests
Maintaining the perfect climate is crucial for healthy and productive plants
Energy-Efficient: Operates on less power than a 100-watt light bulb
Pro Core forms the foundation of the Athena Pro Line
Proactive PKB 16/21 Ventilation Ducting Improves Overall Plant Health: SupportsProactive PKB Methodology N: 0. 0 P: 16. 0 K: 21. 0 B: 0. 5PKB 16 21 Professional PK Flowering Additive Proactive PKB 16 21 is a high performance professional flowering additive featuring a completely unique phosphorus to potassium ratio of 16 21, enhanced with added boron to maximize flowering performance and crop quality. Designed specifically for the bloom phase, PKB 16 21 enhances photosynthesis, supports efficient water regulation, and delivers
US$ 26.99
US$ 148.00
US$ 23.00
US$ 31.00