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 most trusted calcium nitrate fertilizers available, from small trial sizes to full pallets, across multiple brands and chemistry profiles to match your crop requirements and system type.

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 and stress
• Compatible with all systems — soil, coco, hydroponic, NFT, drip, and foliar applications

Available Brands & Formulations

• YaraLiva CalciNit 15.5-0-0 + 19% Ca — double salt of calcium ammonium nitrate; ideal for crops that benefit from a small ammonium fraction; available in 1 lb through full pallet
• Haifa Cal GG 15.5-0-0 + 19% Ca — greenhouse-grade, chloride and sulfate free; optimized for controlled-environment agriculture and recirculating systems
• Haifa Cal Prime 17-0-0 + 23.5% Ca — anhydrous calcium nitrate with the highest calcium content; only 0.3% ammonium; ideal for calcium-demanding crops
• PureCal 13-0-0 + 18% Ca — 100% ammonium-free calcium nitrate trihydrate; the preferred choice for pure water culture and sensitive hydroponic systems
• Hi-Yield Calcium Nitrate 15.5-0-0 — accessible retail format for home gardens and small-scale vegetable production