Flower Stacker | 0-7-5 Bloom Booster with Vitamin B1 | High Phosphorus Potassium Flowering Nutrients | Potting Soil Hydroponics Coco | Indoor & Outdoor Plants | 1 Gallon

Stack Denser Buds. Boost Yields Up to 30%. Every Cycle.

Humboldts Secret Flower Stacker is a concentrated 0-7-5 bloom additive that drives rapid bud formation, tighter nodes, and denser flower sites during the critical bloom window. With Vitamin B1 for stress resilience and a clean formula that works across all growing media, it's the bloom booster serious growers rely on.

Key Features

• 0-7-5 High Phosphorus & Potassium Formula – Delivers peak bloom nutrition to drive rapid bud formation, fuller calyx stacking, and enhanced resin and essential oil production
• Increases Yields Up to 30% – Builds tighter nodes and denser flower sites for standout aroma, rich color, and reliable bag appeal
• Vitamin B1 for Stress Resilience – Supports transplant recovery, early establishment, and plant vigor through training, heat, and light intensity swings
• Clean, pH-Stable Formula – Mixes fast, runs clean, and prevents buildup or line clogging in any growing system
• Universal Compatibility – Works in soil, coco, hydroponics, and aquaponics; pairs seamlessly with Humboldts Secret nutrient line
• 1 Gallon Concentrated Formula – Mixes approximately 470–3,785 gallons depending on dilution rate; precise control for any plant count

Perfect For

Indoor and outdoor flowering plants in potting soil, hydroponics, and coco. Begin in week 3 of flower and use with every or every other watering for maximum bloom performance.