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Haifa Calcium Nitrate 15.5-0-0 50lb bag
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$44.58
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.
Purchase directly from Growers HouseHaifa 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





