

Boca Hydro Calcium Nitrate Fertilizer 15.5-0-0 Plus 26% Calcium – High Purity Greenhouse Grade for Hydroponics, Soil, Fertigation, Foliar – Chloride-Free, Fast-Dissolving
Key item features
- ✅ High Calcium Content – 26% CaDelivers more calcium than standard double-salt formulas (18–19% Ca) for stronger cell walls, firmer fruits, and improved plant health. Premium purity for professional growers. 🌱 Dual-Nutrient Formula: 15.5% N + 26% CaProvides fast-acting nitrate nitrogen for vegetative growth plus readily available calcium for improved flowering, fruiting, and disease resistance. 💧 Ultra-Clean & Highly SolubleGreenhouse-grade purity ensures complete solubility with no residue. Perfect for hydroponics, drip systems, and fertigation without clogging lines or emitters. 🧪 Chloride-Free, Sodium-Free, 100% Plant AvailableSafe for sensitive plants and soil ecosystems. Contains only pure nitrate nitrogen and calcium—no harmful fillers or contaminants. 🌿 Versatile Use in All Growing SystemsIdeal for hydroponics, soilless mixes, raised beds, towers, coco, foliar sprays, and traditional soil-based growing. Trusted by commercial farms and home gardeners. 🔬 Scientifically Designed for Maximum AbsorptionFormulated by plant nutrition experts using the highest quality inputs to ensure quick uptake and efficient use of nutrients. ⚠️ Do Not Mix With Sulfates or PhosphatesKeep separate from MKP, Epsom salts, and other phosphate or sulfur-based products to prevent precipitation in solution.
- ✅ High Calcium Content – 26% CaDelivers more calcium than standard double-salt formulas (18–19% Ca) for stronger cell walls, firmer fruits, and improved plant health. Premium purity for professional growers.
- 🌱 Dual-Nutrient Formula: 15.5% N + 26% CaProvides fast-acting nitrate nitrogen for vegetative growth plus readily available calcium for improved flowering, fruiting, and disease resistance.
- 💧 Ultra-Clean & Highly SolubleGreenhouse-grade purity ensures complete solubility with no residue. Perfect for hydroponics, drip systems, and fertigation without clogging lines or emitters.
- 🧪 Chloride-Free, Sodium-Free, 100% Plant AvailableSafe for sensitive plants and soil ecosystems. Contains only pure nitrate nitrogen and calcium—no harmful fillers or contaminants.
- 🌿 Versatile Use in All Growing SystemsIdeal for hydroponics, soilless mixes, raised beds, towers, coco, foliar sprays, and traditional soil-based growing. Trusted by commercial farms and home gardeners.
- 🔬 Scientifically Designed for Maximum AbsorptionFormulated by plant nutrition experts using the highest quality inputs to ensure quick uptake and efficient use of nutrients.
- ⚠️ Do Not Mix With Sulfates or PhosphatesKeep separate from MKP, Epsom salts, and other phosphate or sulfur-based products to prevent precipitation in solution.
Specs
- Fertilizer typeSynthetic
- FormLiquid
- Rec. usePlant
- Rec locationIndoor, Outdoor
How do you want your item?
About this item
Product details
Boca Hydro Calcium Nitrate (15.5-0-0 + 26% Ca)
Premium-Grade Calcium and Nitrogen Plant Food
Boca Hydro Calcium Nitrate is a high-purity, greenhouse-grade fertilizer delivering 15.5% Nitrogen (N) and 26% highly available Calcium (Ca) – significantly higher than the 18–19% calcium in common double salt blends. Our ultra-refined formula provides superior solubility and cleaner performance in hydroponics, fertigation, foliar feeding, and container gardening.
Calcium is vital for cell wall strength, fruit firmness, and disease resistance, while nitrate nitrogen drives vigorous vegetative growth. Boca Hydro’s premium formulation ensures quick absorption with no residues – ideal for professional growers who demand precision and performance.
Sodium Free, Chloride Free, 100% Available Plant Macronutrients.
Perfect for Hydroponics, Drip Irrigation, Flood & Drain, NFT, DWC, Soil, Soilless, Coco, Foliar, Tower Gardens and Raised Beds.
Symptoms:
The most prevalent sign of calcium deficiency is blossom end rot, in which a plant or tree drops its fruit or buds and appears to rot at the tip.
Calcium Defeciency will also result in distorted growth and deformation of root tips, leaves, and shoot tips. In addition weaker plants are more suceptible to fungus and disease.
Other symptoms include distorted fruits that do not form correctly or partially rot while growing, low density of buds, significaly reduced quality, potency, flavor, yield of harvest and shortened shelf life.
Designed by plant science professionals and sourced from the highest quality ingredients to make the purest and cleanest product available.
Contains no harmful chemicals and will not damage or pollute soil or water in any way.
Easy to apply at every watering or fertilizing cycle or throughout the growing season.
Easy to apply with other nutrients. Approved for all fertigation and irrigation injection systems.
Avoid application and contact with sulfates and phosphates. (MKP or Sulfur)
- ✅ High Calcium Content – 26% CaDelivers more calcium than standard double-salt formulas (18–19% Ca) for stronger cell walls, firmer fruits, and improved plant health. Premium purity for professional growers. 🌱 Dual-Nutrient Formula: 15.5% N + 26% CaProvides fast-acting nitrate nitrogen for vegetative growth plus readily available calcium for improved flowering, fruiting, and disease resistance. 💧 Ultra-Clean & Highly SolubleGreenhouse-grade purity ensures complete solubility with no residue. Perfect for hydroponics, drip systems, and fertigation without clogging lines or emitters. 🧪 Chloride-Free, Sodium-Free, 100% Plant AvailableSafe for sensitive plants and soil ecosystems. Contains only pure nitrate nitrogen and calcium—no harmful fillers or contaminants. 🌿 Versatile Use in All Growing SystemsIdeal for hydroponics, soilless mixes, raised beds, towers, coco, foliar sprays, and traditional soil-based growing. Trusted by commercial farms and home gardeners. 🔬 Scientifically Designed for Maximum AbsorptionFormulated by plant nutrition experts using the highest quality inputs to ensure quick uptake and efficient use of nutrients. ⚠️ Do Not Mix With Sulfates or PhosphatesKeep separate from MKP, Epsom salts, and other phosphate or sulfur-based products to prevent precipitation in solution.
- ✅ High Calcium Content – 26% CaDelivers more calcium than standard double-salt formulas (18–19% Ca) for stronger cell walls, firmer fruits, and improved plant health. Premium purity for professional growers.
- 🌱 Dual-Nutrient Formula: 15.5% N + 26% CaProvides fast-acting nitrate nitrogen for vegetative growth plus readily available calcium for improved flowering, fruiting, and disease resistance.
- 💧 Ultra-Clean & Highly SolubleGreenhouse-grade purity ensures complete solubility with no residue. Perfect for hydroponics, drip systems, and fertigation without clogging lines or emitters.
- 🧪 Chloride-Free, Sodium-Free, 100% Plant AvailableSafe for sensitive plants and soil ecosystems. Contains only pure nitrate nitrogen and calcium—no harmful fillers or contaminants.
- 🌿 Versatile Use in All Growing SystemsIdeal for hydroponics, soilless mixes, raised beds, towers, coco, foliar sprays, and traditional soil-based growing. Trusted by commercial farms and home gardeners.
- 🔬 Scientifically Designed for Maximum AbsorptionFormulated by plant nutrition experts using the highest quality inputs to ensure quick uptake and efficient use of nutrients.
- ⚠️ Do Not Mix With Sulfates or PhosphatesKeep separate from MKP, Epsom salts, and other phosphate or sulfur-based products to prevent precipitation in solution.
Specifications
Fertilizer type
Form
Rec. use
Brand
Warranty
Warranty information
Similar items you might like
Based on what customers bought
Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca | Fast-Acting Water Soluble Fertilizer Prevents Blossom End Rot - Boosts Growth & Yield for Vegetables, Fruit, Gardens & Hydroponics (10 Pounds) $31.99
Sponsored$3199current price $31.99Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca | Fast-Acting Water Soluble Fertilizer Prevents Blossom End Rot - Boosts Growth & Yield for Vegetables, Fruit, Gardens & Hydroponics (10 Pounds)
13 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysCalcium Nitrate Fertilizer (5 Pounds) $17.59
$1759current price $17.59Calcium Nitrate Fertilizer (5 Pounds)
954.7 out of 5 Stars. 95 reviewsStop Blossom-End Rot of Tomatoes - Corrects Calcium Deficiency - 16 fl oz Bottle by Southern Ag $14.62
$1462current price $14.62Stop Blossom-End Rot of Tomatoes - Corrects Calcium Deficiency - 16 fl oz Bottle by Southern Ag
64.8 out of 5 Stars. 6 reviewsCalcium Nitrate - Provides Calcium and Nitrogen to Vegetables and Flowers - 5 lb Bag by Southern Ag $22.99
$2299current price $22.99Calcium Nitrate - Provides Calcium and Nitrogen to Vegetables and Flowers - 5 lb Bag by Southern Ag
25 out of 5 Stars. 2 reviewsBest seller Espoma Organic Soil Acidifier, 6 lb Bag – Lowers Soil pH for Hydrangeas, Blueberries, Azaleas & Acid-Loving Plants $11.94 $1.99/lb
Best seller
$1194current price $11.94$1.99/lbEspoma Organic Soil Acidifier, 6 lb Bag – Lowers Soil pH for Hydrangeas, Blueberries, Azaleas & Acid-Loving Plants
2074.6 out of 5 Stars. 207 reviewsBest seller Expert Gardener All Purpose Plant Fertilizer, 10-10-10 Fertilizer, 10 lb. $8.97 99.7 ¢/lb
Best seller
4 optionsAvailable in additional 4 options$897current price $8.9799.7 ¢/lbExpert Gardener All Purpose Plant Fertilizer, 10-10-10 Fertilizer, 10 lb.
30934.6 out of 5 Stars. 3093 reviewsBoca Hydro Chelated Iron 14% EDTA Water-Soluable Plant Nutrient $24.99
$2499current price $24.99Boca Hydro Chelated Iron 14% EDTA Water-Soluable Plant Nutrient
15 out of 5 Stars. 1 reviewsSouthern Ag STOP Blossom-End Rot of Tomatoes - 1 Quart $17.99
$1799current price $17.99Southern Ag STOP Blossom-End Rot of Tomatoes - 1 Quart
104.6 out of 5 Stars. 10 reviewsPlantonix Kelp Bliss Pure Norwegian Kelp Soil Amendment & Fertilizer - 1 lb $12.99
4 optionsAvailable in additional 4 options$1299current price $12.99Plantonix Kelp Bliss Pure Norwegian Kelp Soil Amendment & Fertilizer - 1 lb
314.8 out of 5 Stars. 31 reviewsBONIDE Rot Stop Rtu Blossom End Rot Stop 1676 — Standard Mounting Hardware, Drop-In Replacement $17.09 Was $23.60
$1709current price $17.09, Was $23.60$23.60BONIDE Rot Stop Rtu Blossom End Rot Stop 1676 — Standard Mounting Hardware, Drop-In Replacement
424.3 out of 5 Stars. 42 reviewsSupply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca | Fast-Acting Water Soluble Fertilizer Prevents Blossom End Rot - Boosts Growth & Yield for Vegetables, Fruit, Gardens & Hydroponics (5 Pounds) $21.65
$2165current price $21.65Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca | Fast-Acting Water Soluble Fertilizer Prevents Blossom End Rot - Boosts Growth & Yield for Vegetables, Fruit, Gardens & Hydroponics (5 Pounds)
33.7 out of 5 Stars. 3 reviewsHi-Yield (32128 ) Ammonium Calcium Nitrate 15-0-0, Helps Precent Blossom End Rot in Tomatoes (3.25 lbs.) $20.02
$2002current price $20.02Hi-Yield (32128 ) Ammonium Calcium Nitrate 15-0-0, Helps Precent Blossom End Rot in Tomatoes (3.25 lbs.)
74.7 out of 5 Stars. 7 reviews⭐ PREMIUM Bioavailable Silica Fertilizer for Dahlia – 8oz – Ideal for Hydroponics & Soil – Healthier Plants with Strong Stalks - CONCENTRATE $11.99
$1199current price $11.99⭐ PREMIUM Bioavailable Silica Fertilizer for Dahlia – 8oz – Ideal for Hydroponics & Soil – Healthier Plants with Strong Stalks - CONCENTRATE
flash 100% Organic Humic Acid, Nitrogen & Amino Acids – OMRI Listed Fertilizer & Soil Enhancer by PHIGZNT – Organic Juice Growth, Water Soluble Concentrate, 200g $6.34
$634current price $6.34flash 100% Organic Humic Acid, Nitrogen & Amino Acids – OMRI Listed Fertilizer & Soil Enhancer by PHIGZNT – Organic Juice Growth, Water Soluble Concentrate, 200g
All Purpose Fertilizer Calcium Nitrate Combo $35.44
$3544current price $35.44All Purpose Fertilizer Calcium Nitrate Combo
PowerGrow Systems 15.5-0-0 Calcium Nitrate Organic Fertilizer, 1 lb $12.95
$1295current price $12.95PowerGrow Systems 15.5-0-0 Calcium Nitrate Organic Fertilizer, 1 lb
184.8 out of 5 Stars. 18 reviews⭐ PREMIUM Bioavailable Silica Fertilizer for Bamboo – 8oz – Ideal for Hydroponics & Soil – Healthier Plants with Strong Stalks - CONCENTRATE $11.99
$1199current price $11.99⭐ PREMIUM Bioavailable Silica Fertilizer for Bamboo – 8oz – Ideal for Hydroponics & Soil – Healthier Plants with Strong Stalks - CONCENTRATE
94.8 out of 5 Stars. 9 reviewsPPLoney Rooting Powder - Growth Accelerator for Strong Plants, Nutritional Balance & Soil Improvement $9.17
$917current price $9.17PPLoney Rooting Powder - Growth Accelerator for Strong Plants, Nutritional Balance & Soil Improvement
Garden Safe Brand TakeRoot Rooting Hormone, Helps New Plants grow from Cuttings, 2 Ounces, 2 Pack C40 $14.69
$1469current price $14.69Garden Safe Brand TakeRoot Rooting Hormone, Helps New Plants grow from Cuttings, 2 Ounces, 2 Pack C40
15 out of 5 Stars. 1 reviews⭐ PREMIUM Bioavailable Silica Fertilizer for Anthurium – 8oz – Ideal for Hydroponics & Soil – Healthier Plants with Strong Stalks - CONCENTRATE $11.99
2 optionsAvailable in additional 2 options$1199current price $11.99⭐ PREMIUM Bioavailable Silica Fertilizer for Anthurium – 8oz – Ideal for Hydroponics & Soil – Healthier Plants with Strong Stalks - CONCENTRATE
25 out of 5 Stars. 2 reviews
Customer ratings & reviews
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Showing 1-1 of 1 review
Verified Purchase
Just what I ordered and on time
On time and no hassle to buy with my gift card


