Boca Hydro Ocean-K 2-2-18 High Potassium Seaweed Fertilizer

Boca Hydro Calcium Nitrate

Premium Greenhouse-Grade Calcium & Nitrogen Fertilizer

15.5-0-0 | 15.5% Nitrogen | 26.5% Calcium Oxide (CaO)

Boca Hydro Calcium Nitrate is a high-purity, professional-grade fertilizer formulated to provide 15.5% total nitrogen and 26% highly available calcium. Its greenhouse-grade formula is highly water soluble and designed for clean, consistent nutrient delivery in hydroponics, fertigation, containers, foliar applications, and soil-grown crops.

Calcium supports strong cell walls, healthy growing points, improved fruit firmness, and better crop quality. Nitrate nitrogen provides rapid nutrition for vigorous plant growth while minimizing excessive ammonium accumulation.

Key Features & Benefits

26% Calcium
Supports strong cell walls, healthy new growth, firmer fruit, and improved crop quality.

15.5% Total Nitrogen
Provides rapidly available nitrogen to support vigorous vegetative growth.

Highly Water Soluble
Dissolves readily for use in hydroponics, drip systems, fertigation, and stock solutions.

Greenhouse-Grade Purity
Manufactured for consistent nutrient analysis, dependable mixing, and precise application.

Chloride-Free & Sodium-Free
Suitable for salt-sensitive crops, hydroponic systems, and intensive growing programs.

Versatile Application
Suitable for hydroponics, coco, soil, containers, towers, raised beds, and field crops.

Ideal For

Fruit & Nut Trees Vegetables Leafy Greens Hydroponics Coco & Soilless Mixes Containers & Towers Greenhouse Crops Fertigation Systems

Compatibility Notice: Keep concentrated calcium nitrate stock solutions separate from fertilizers containing phosphates, sulfates, or carbonates. Combine only after adequate dilution in the final irrigation water.

📄 Boca Hydro Calcium Nitrate Dosing PDF

View or print the complete application and dosing guide

🧪 Boca Hydro Calcium Nitrate SDS

View or print the Safety Data Sheet

Boca Hydro Calcium Nitrate

Application & Dosing Guide

15.5-0-0 | 15.5% Nitrogen | 26.5% CaO

Boca Hydro Calcium Nitrate provides fast-acting nitrate nitrogen and highly available calcium for hydroponics, fertigation, foliar feeding, containers, and soil-grown plants.

Always dissolve in water before use. A digital scale is recommended for accurate measurement.

Stock Solution Concentrate

Dissolve 500 grams (1.1 lb) of Boca Hydro Calcium Nitrate in water, then add enough water to make exactly 1 gallon of finished concentrate.

1 mL concentrate
≈ 0.132 g dry product

1 tsp concentrate
≈ 0.65 g dry product

1 tbsp concentrate
≈ 1.95 g dry product

1 fl oz concentrate
≈ 3.9 g dry product

Approximate dry reference: 1 level teaspoon ≈ 5 g and 1 level tablespoon ≈ 15 g. Product density may vary.

Foliar Application

Application	Dry Product	Concentrate
Maintenance	2–5 g per gallon	1–2½ tbsp
Deficiency Correction	6–10 g per gallon	3–5 tbsp

Apply during the cooler part of the day. Test sensitive plants before treating the entire crop.

Pots & Containers

Plant Size	Dry Product	Concentrate
Small	1–2 g per gallon	1½–3 tsp
Medium	3–5 g per gallon	1½–2½ tbsp
Large	6–8 g per gallon	3–4 tbsp

Hydroponics

Recommended target range: 80–150 ppm elemental calcium

Target Ca	Dry Product	Concentrate
80 ppm	1.6 g per gallon	12 mL or 2½ tsp
100 ppm	2.0 g per gallon	15 mL or 1 tbsp
150 ppm	3.0 g per gallon	23 mL or 1½ tbsp

Account for the nitrate nitrogen supplied when formulating a complete nutrient program.

Soil & Root Drench

Application	Dry Product	Concentrate
Light Feeding	10–15 g per 5 gallons	⅓–½ cup
Heavy Feeding	20–30 g per 5 gallons	⅔–1 cup

Fertigation — 1:100 Injector

Dissolve the listed dry amount in water and add enough water to make 1 gallon of finished injector stock solution.

Target Calcium	Dry Product per Gallon of Injector Stock	Injection Ratio
80 ppm Ca	160 grams	1:100
100 ppm Ca	200 grams	1:100
150 ppm Ca	300 grams	1:100

Important: These fertigation stock strengths are prepared directly for a 1:100 injector. They are separate from the 500 g-per-gallon concentrate used for hand-mixed applications.

Compatibility Notice

Keep concentrated calcium nitrate separate from fertilizers containing phosphates, sulfates, or carbonates. Combine only after each product has been sufficiently diluted in the final irrigation water.

Application rates may be adjusted according to crop requirements, water quality, environmental conditions, and plant tolerance.

Boca Hydro Calcium Nitrate Greenhouse Grade Water Soluble 15.5-0-0 +26% Calcium