Boca Hydro Cal-Mag with Iron is a fully water-soluble nitrate-based calcium and magnesium fertilizer designed for hydroponics, coco, soil, containers, fertigation, and foliar feeding. Made with Boca Hydro Calcium Nitrate, Boca Hydro Magnesium Nitrate, and added chelated Iron DTPA, this formula supplies essential calcium for strong cell walls, magnesium for chlorophyll production, and iron to support deep green growth and healthy new leaves.

Calcium and magnesium are two of the most important secondary nutrients in fast-growing plants, especially in hydroponics, coco, fruiting crops, tomatoes, peppers, citrus, ornamentals, and heavy-feeding gardens. This clean nitrate-based formula dissolves quickly, feeds efficiently, and helps correct common Cal-Mag deficiencies caused by soft water, reverse osmosis water, coco coir, heavy fruiting, rapid growth, and high-potassium feeding programs.

Boca Hydro Cal-Mag + Iron

Water-soluble calcium, magnesium, and chelated iron for hydroponics, coco, soil, containers, foliar feeding, and fertigation.

Product Description

Boca Hydro Cal-Mag + Iron supports plants through every stage of growth, from strong vegetative development to bloom, flowering, and fruit production. Calcium helps build strong cell walls and improves fruit quality, magnesium supports chlorophyll production and photosynthesis, and chelated iron helps maintain deep green growth and healthy new leaves. This clean nitrate-based formula is ideal for hydroponics, coco, soil, containers, and fruiting crops.

Stock Solution (Concentrate)

Dissolve 1,000 grams (2.2 lbs) of Boca Hydro Cal-Mag + Iron in 1 gallon of distilled water. Mix thoroughly until fully dissolved. We recommend a digital pocket scale for accuracy.

Hydroponics

Growth Stage	Dry Product	Stock Solution
Seedlings	0.25–0.5 g/gal	1–2 mL/gal concentrate
Vegetative	0.5–1 g/gal	2–4 mL/gal concentrate
Early Bloom	1–1.5 g/gal	4–6 mL/gal concentrate
Full Bloom	1.5–2 g/gal	6–8 mL/gal concentrate
Deficiency Correction	2–2.5 g/gal	8–10 mL/gal concentrate

Foliar Spray

Growth Stage	Dry Product	Stock Solution
Vegetative	0.5–1 g/gal	2–4 mL/gal concentrate
Early Bloom	0.75–1 g/gal	3–4 mL/gal concentrate
Full Bloom	1–1.5 g/gal	4–6 mL/gal concentrate

Pots & Containers

Growth Stage	Dry Product	Stock Solution
Vegetative	0.5–1 g/gal	2–4 mL/gal concentrate
Early Bloom	1–1.5 g/gal	4–6 mL/gal concentrate
Full Bloom	1.5–2 g/gal	6–8 mL/gal concentrate

Soil Drench

Growth Stage	Dry Product	Stock Solution
Vegetative	5–10 g per 5 gal	0.6–1.3 fl oz concentrate
Bloom	10–20 g per 5 gal	1.3–2.6 fl oz concentrate

Fertigation

Growth Stage	Stock Tank Strength	Notes
Vegetative	50–100 g/gal stock	Inject at 1:100
Bloom	150–200 g/gal stock	Inject at 1:100
Deficiency Correction	250 g/gal stock	Inject at 1:100

Guaranteed Analysis

Total Nitrogen (N)	13.9%
Calcium (Ca)	17.6%
Magnesium (Mg)	4.9%
Iron (Fe) (DTPA)	0.12%

Derived from: Calcium Nitrate, Magnesium Nitrate, Iron DTPA

Important Notes

Do not mix concentrated stock solutions with phosphate or sulfate concentrates.
Products may be combined after dilution in the final irrigation water.
Keep out of reach of children and pets.
Store sealed in a cool, dry place.
Not for human or animal consumption.

Boca Hydro Cal-Mag with Iron Water Soluble Calcium Magnesium Fertilizer for Hydroponics Coco Soil and Fruiting Plants