MasterBlend 4-18-38 Master Kit (3 Separate Components in correct amounts)
Contains MasterBlend 4-18-38, Calcium Nitrate 15.5-0-0, and Epsom Salt (Magnesium Sulfate)
Used by professionals worldwide for optimum plant growth
100% Water Soluble for easy plant uptake
Packed by weight in a 1/1/0.5 ratio based off the MasterBlend recipe of 12g MB, 12g, CN, and 6g ES
MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (25 Pound Kit) best price $59.99 new 2025
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