The FoxFarm Grow Big Fertilizer 2.5-gallon concentrate is a fast-acting, nitrogen-forward liquid nutrient formula engineered to drive vigorous vegetative growth at commercial scale. With a 6-4-4 NPK ratio, FoxFarm Grow Big Fertilizer enhances plant size and structural integrity — building the strong stems and lush canopy needed to support abundant fruit, flower, and bud development later in the grow cycle.
The 2.5-gallon size of FoxFarm Grow Big Fertilizer is the preferred choice for commercial growers, large-scale cultivation facilities, and serious home growers running multiple cycles who want to maximize value per application without sacrificing the proven FoxFarm performance. Formulated with a low pH to maintain micronutrient availability and long-term storage stability across all growing systems.
6-4-4 NPK ratio — nitrogen-forward formula for explosive vegetative growth
Low pH formulation — keeps micronutrients available and maintains storage stability
2.5-gallon liquid concentrate — bulk size for high-volume and multi-cycle feeding programs
Enhances plant size, stem strength, and structural development
Compatible with soil, coco coir, and hydroponic systems
Use during the vegetative phase and transition into FoxFarm Tiger Bloom® at first signs of flowering. Follow the FoxFarm feeding schedule for best results at every growth stage.
2.5 Gallon | 6-4-4 NPK | Liquid Concentrate | Made by FoxFarm®