PureCal Calcium Nitrate Fertilizer — 13-0-0 + 18% Ca | 4 lb Jar

When purity matters, growers reach for PureCal. This pharmaceutical-grade calcium nitrate delivers a clean, fully soluble source of nitrate nitrogen and calcium — with zero ammonium (NH₄). That makes it the go-to choice for recirculating hydroponics, pure water culture, and any system where ammonium buildup can disrupt pH balance or harm sensitive root zones.

The 4 lb jar is perfect for hobbyist growers, home hydroponic setups, or anyone looking to trial PureCal before scaling up. Same professional-grade purity — in a convenient, resealable jar.

Key Benefits

• 100% nitrate nitrogen — no ammonium, ideal for recirculating and NFT systems
• 18% calcium — supports strong cell walls, reduces tip burn, and improves fruit quality
• Highly pure white crystals — dissolves completely and rapidly in water
• Precise dosing — 1 gram per gallon yields 34.32 ppm nitrate-N and 47.52 ppm calcium
• Versatile — compatible with drip, NFT, DWC, and ebb-and-flow systems

Ideal Applications

• Home hydroponic and aquaponic systems
• Small-scale greenhouse and container growing
• Trialing PureCal before purchasing larger quantities

Product Details

• Analysis: 13-0-0 + 18% Ca
• Net Weight: 4 lb jar
• Nitrogen Form: 100% nitrate (ammonium-free)
• Solubility: Fully water-soluble
• Brand: PureCal by The Andersons

Documents

• PureCal Label (PDF)
• PureCal Specifications (PDF)
• Safety Data Sheet / SDS (PDF)