Greenhouse-Grade Calcium Nitrate 15.5-0-0 — 4 lb

Professional greenhouse-grade calcium nitrate for hydroponic, fertigation, and foliar applications. The 4 lb container is ideal for hobbyist growers, small commercial operations, and growers running multi-part nutrient programs who need a reliable calcium and nitrogen source. Fully water-soluble with no residue, this calcium nitrate delivers both calcium and nitrate nitrogen in a single, highly compatible product.

Key Features

• 15.5% total nitrogen — 14.4% nitrate-N + 1.1% ammonium-N for immediate and sustained uptake
• 19% soluble calcium — the preferred calcium source for hydroponic and fertigation systems
• 100% water soluble — free-flowing fine granular; dissolves completely with no residue
• Chloride and sodium free — safe for sensitive crops and recirculating systems
• Compatible with all fertigation systems — hydroponics, drip, NFT, DWC, foliar
• Prevents calcium deficiency — tip burn, blossom end rot, and soft fruit disorders

Applications

• Hydroponic nutrient solution calcium and nitrogen source
• Fertigation and drip irrigation supplementation
• Foliar calcium application
• Tip burn and blossom end rot prevention in tomatoes, peppers, and leafy greens

Specifications

• Analysis: 15.5-0-0 with 19% Ca
• Nitrogen: 15.5% total (14.4% NO₃-N, 1.1% NH₄-N)
• Calcium: 19% soluble
• Grade: Greenhouse/Solution grade
• Container: 4 lb
• Country of Origin: Norway
• SKU: YARA-CALCINIT-4lb