Mega Crop 2 Part B 15.5-0-0

Greenleaf Nutrients Mega Crop 2 Part B (15.5-0-0) is the nitrogen-dominant second component of Greenleaf's two-part professional hydroponic base nutrient system. At 15.5% nitrogen with zero phosphorus and potassium, Part B provides the nitrogen dose that balances the flowering-heavy 5-12-26 Part A to create a complete, stage-appropriate combined nutrient solution.

The adjustable nitrogen contribution is a key advantage of the two-part system: during vegetative growth, more Part B is used relative to Part A to increase nitrogen; during bloom, Part A dominates to raise PK while nitrogen is dialed back. This flexibility lets growers dial in precise nutrient ratios for their specific strains, media, and growth styles.

Mix Part B into water separately from Part A before combining in the reservoir. Like Part A, Part B uses premium ingredient forms and chelates for maximum bioavailability. Compatible with all hydroponic, coco, and soilless systems. Part of Greenleaf's premium professional line for growers who want the precision of two-part mixing with a complete, science-backed nutrient formula.