PureCal Calcium Nitrate Fertilizer — 13-0-0 + 18% Ca | 20 lb Pail

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.

Dissolve it in water and watch it disappear completely — no cloudiness, no residue, no clogged emitters. Just precise, predictable nutrition your crops can immediately use. The 20 lb pail is ideal for smaller operations, trials, or growers who want the same professional-grade formula in a more manageable size.

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

• Recirculating hydroponics and pure water culture
• Greenhouse floriculture and vegetable production
• High-value crops sensitive to ammonium toxicity

Product Details

• Analysis: 13-0-0 + 18% Ca
• Net Weight: 20 lb pail
• 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)