Haifa Calcium Nitrate 15.5-0-0 for Greenhouse Feeding
Haifa Calcium Nitrate 15.5-0-0 is the greenhouse grade of Haifa Cal, a fully water soluble calcium and nitrogen source. The 15.5% nitrogen runs mostly as nitrate, at 14.4% nitrate to 1.1% ammoniacal, alongside 19% calcium. Nitrate feeds fast and keeps calcium moving into new growth, so a greenhouse or indoor crop holds firm cell walls. It dissolves clear and colorless, with only 0.03% insoluble matter, so it runs clean through fertigation lines and stock tanks.
Water Soluble Calcium for Fertigation and Foliar Feeding
As a water soluble calcium fertilizer, it works through fertigation or as a foliar feed on greenhouse and soilless crops. Steady calcium is what heads off blossom end rot in tomato and pepper and tip burn in lettuce. Most growers run it in its own stock tank, kept apart from phosphates and sulfates that would drop calcium out of solution. That keeps the feed clean whether the crop sits on a greenhouse bench, in an indoor garden, or in an open field.
Key Features
- 15.5-0-0 with 19% Ca: Nitrate-led nitrogen and calcium in one soluble feed
- Fully water soluble: Clear, colorless solution with only 0.03% insoluble matter
- Greenhouse grade: Built for fertigation of soilless and greenhouse crops
- Fertigation or foliar: Runs through drip lines or as a foliar spray
- Stronger cell walls: Steady calcium guards against blossom end rot and tip burn
Technical Specifications
| Specification | Detail |
|---|---|
| Model / SKU | HN3004297 (Haifa Cal GG) |
| Type | Greenhouse grade calcium nitrate |
| NPK | 15.5-0-0 |
| Total Nitrogen | 15.5% |
| Nitrate Nitrogen | 14.4% |
| Ammoniacal Nitrogen | 1.1% |
| Calcium | 19% Ca (26.5% CaO) |
| Solubility | Fully water soluble |
| Solution | Clear, colorless |
| Insoluble Matter | 0.03% |
| Form | White granular |
| Application | Fertigation (Nutrigation) and foliar feeding |
| Bag Size | 50 lb |
| Mixing Note | Keep separate from phosphates and sulfates in stock tanks |