Calcium Nitrate Fertilizer

Professional-Grade Calcium Nitrate Fertilizers — Top Brands in Stock

Calcium nitrate is the cornerstone of any serious hydroponic or greenhouse nutrient program. As a highly soluble source of both nitrate nitrogen and calcium, it delivers two critical plant nutrients in a single, immediately available form — compatible with soil, soilless, hydroponic, and fertigation systems alike.

Custom Hydro stocks the three most trusted calcium nitrate fertilizers available, each with a distinct chemistry profile to match your crop requirements and system type:

• YaraLiva CalciNit 15.5-0-0 + 19% Ca — double salt of calcium ammonium nitrate with 1.1% ammonium content; ideal for crops that benefit from a small ammonium fraction
• Haifa Cal Prime 17-0-0 + 23.5% Ca — anhydrous calcium nitrate with only 0.3% ammonium; highest calcium content of the three, excellent for calcium-demanding crops
• PureCal 13-0-0 + 18% Ca — pure calcium nitrate trihydrate with zero ammonium; the preferred choice for recirculating hydroponics and pure water culture systems

Why Calcium Nitrate is Essential

• Dual-nutrient efficiency — delivers nitrate nitrogen and calcium in a single, fully soluble application
• Immediately plant-available — no conversion required; nutrients are taken up directly by roots
• Prevents calcium deficiency — reduces tip burn, blossom end rot, and poor fruit quality
• Strengthens cell walls — improves crop quality, shelf life, and resistance to disease
• Compatible with all systems — soil, coco, hydroponic, NFT, drip, and foliar applications