General Hydroponics CALiMAGic

General Hydroponics CALiMAGic is a concentrated calcium and magnesium supplement formulated to prevent secondary nutrient deficiencies and support vigorous plant growth throughout every stage of development. Designed for use alongside virtually any nutrient program, CALiMAGic supplies readily available calcium, magnesium, and chelated iron to help plants maintain healthy structure, strong growth, and consistent nutrient uptake.

Fast-growing plants often require additional calcium and magnesium, especially when grown in reverse osmosis (RO) water, coco coir, hydroponic systems, or other low-mineral growing media. CALiMAGic replenishes these essential secondary nutrients while helping prevent common disorders such as blossom end rot in tomatoes and tip burn in leafy vegetables.

Its clean, fully soluble formula mixes easily without clogging drip emitters, irrigation systems, spray lines, or reservoirs, making it ideal for hydroponic systems, coco, soil, rockwool, and other growing methods.

CALiMAGic integrates seamlessly into existing feeding programs and is compatible with most fertilizers and nutrient systems. When used alongside the FloraSeries, General Hydroponics recommends adding Armor Si first (if used), followed by CALiMAGic, and then FloraMicro before adding other FloraSeries nutrients.

Suitable for home gardeners, greenhouse operations, commercial facilities, and hydroponic growers, CALiMAGic helps ensure plants receive the calcium and magnesium required for vigorous growth, improved nutrient uptake, and healthier crops.

Prevents Calcium & Magnesium Deficiencies

CALiMAGic supplies readily available calcium and magnesium that help prevent common secondary nutrient deficiencies before they impact plant health.

It is especially beneficial when using reverse osmosis water, coco coir, or low-mineral water sources.

Supports Healthy Plant Structure

Calcium plays an essential role in cell wall development, root growth, and overall plant strength.

Regular supplementation helps promote healthier stems, roots, and foliage.

Helps Prevent Blossom End Rot & Tip Burn

CALiMAGic helps reduce the likelihood of calcium-related disorders including blossom end rot in fruiting plants and tip burn in leafy vegetables.

Includes Chelated Iron

In addition to calcium and magnesium, the formula supplies chelated iron to support chlorophyll production and healthy green growth.

Fully Water Soluble

The concentrated liquid dissolves completely in nutrient solutions without leaving residue.

It will not clog irrigation systems, spray equipment, or drip emitters.

Compatible with Most Nutrient Programs

CALiMAGic can be used alongside virtually any fertilizer program and integrates easily with General Hydroponics FloraSeries nutrients.

Ideal for Multiple Growing Media

Suitable for:

• Hydroponics
• Coco Coir
• Soil
• Potting Mix
• Peat-Based Mixes
• Rockwool
• Water Culture

Easy to Use

For most applications, simply add CALiMAGic before your base nutrients.

When using FloraSeries, always add Armor Si first (if used), then CALiMAGic, followed by FloraMicro.

Trusted General Hydroponics Quality

Manufactured by General Hydroponics, CALiMAGic has become one of the industry's most widely used calcium and magnesium supplements for professional and hobby growers alike.

Directions for Use

• Shake well before use.
• Use 1 mL per liter (approximately 1 teaspoon per gallon) for most applications.
• When using reverse osmosis or purified water, add CALiMAGic before base nutrients.
• When growing in coco coir or prepared soil mixes, apply during media preparation and throughout the first two weeks of growth.
• Continuous use may benefit fast-growing annual plants.
• When using FloraSeries, add Armor Si first (if used), then CALiMAGic, then FloraMicro.

Guaranteed Analysis

NPK: 1-0-0

• Total Nitrogen (N): 1.0%
  • 1.0% Nitrate Nitrogen
• Calcium (Ca): 5.0%
• Magnesium (Mg): 1.5%
  • 1.5% Water Soluble Magnesium
• Iron (Fe): 0.1%
  • 0.1% Chelated Iron

Derived from:

• Calcium Carbonate
• Magnesium Nitrate
• Iron DTPA

What's Included

• General Hydroponics CALiMAGic Plant Supplement
• Factory-Sealed Container