Athena Pro Bloom is a fully soluble, zero-nitrogen dry fertilizer formulated specifically for the flowering phase of commercial cannabis and hemp production. Its 0-12-24 formulation delivers elevated phosphorus and potassium along with sulfate-sourced magnesium and chelated iron. It is one half of Athena’s Pro Line two-part base system and is designed to be paired with Pro Core, which supplies the calcium, nitrogen and chelated micronutrients missing from Pro Bloom. The dry, large-grind granule dissolves completely at room temperature without sediment, making it suitable for automated commercial fertigation.
• Product Type: Dry soluble flowering base fertilizer
• Brand / Line: Athena / Pro Line
• NPK: 0-12-24
• Available Phosphate (P₂O₅): 12%
• Soluble Potash (K₂O): 24%
• Magnesium (Mg): 3%
• Sulfur (S): 9%
• Iron (Fe): 0.1% — chelated with DTPA
• Form: Dry soluble granule — 100% water soluble
• Nitrogen: 0%
• Primary Function: Flowering-stage P, K, Mg, S and Fe supply
• Potassium Source: Potassium sulfate
• Other Sources: Monopotassium phosphate, magnesium sulfate and iron DTPA
• Use With: Athena Pro Core
• Bloom/Core Ratio: 1 g Pro Bloom : 0.6 g Pro Core
• Maximum Stock Concentrate: 2.5 lb per gallon of water
• Mixing: Pre-dissolve Pro Bloom and Pro Core separately; never combine the dry powders or concentrates directly
• Dosing Systems: Dosatron, Netaflex, Rhythm and comparable injection systems
• Sediment: No particulates or sediment when properly dissolved
• Irrigation Compatibility: Designed for drip irrigation and automated fertigation
• Use Stage: Flowering phase; replaces Pro Grow when plants transition to reproductive growth
• Available Sizes: 10 lb box, 25 lb box and 25 lb bag
Key Advantage: Pro Bloom provides the high-P/K component of Athena’s two-part Pro flowering system without adding nitrogen. Using potassium sulfate instead of potassium nitrate allows the formula to supply 9% sulfur alongside potassium, while the fully soluble granule is designed for accurate stock-tank dosing without sediment or emitter-clogging particulates. Importantly, Pro Bloom is not a complete standalone fertilizer—it must be paired with Pro Core to provide calcium, nitrogen and the remaining micronutrients.