General Hydroponics CaliMagic Calcium Magnesium Supplement

General Hydroponics CaliMagic

Calcium and magnesium deficiencies sabotage fast-growing crops long before most growers recognize the symptoms—tip burn, blossom end rot, and interveinal chlorosis signal that critical secondary nutrients have become limiting factors. CaliMagic delivers 1-0-0 NPK with 5% calcium, 1.5% magnesium, and 0.1% chelated iron in a concentrated, readily available formula designed to prevent the secondary nutrient deficiencies that plague high-performance plants in coco coir, hydroponics, and filtered water systems.

This isn't a generic Cal-Mag supplement. CaliMagic uses calcium carbonate and magnesium nitrate to provide both immediate and sustained availability, while the chelated iron (DTPA) prevents the iron chlorosis that often accompanies calcium-magnesium imbalances. The 1% nitrate nitrogen supports the metabolic processes that utilize calcium and magnesium, ensuring these minerals don't just enter plants but actually participate in cell wall formation, enzyme activation, and chlorophyll production where they're needed most.

Commercial growers operating in coco coir, using RO or filtered water, or running LED lighting (which increases calcium-magnesium demands) recognize CaliMagic as essential rather than optional. The fully soluble formulation won't clog drip emitters or spray lines, making it practical for automated fertigation systems. Compatible with virtually all fertilizers and safe for use in reservoirs, CaliMagic works seamlessly with silica supplements like General Hydroponics Armor Si Nutrients to build plant resilience while eliminating the calcium-intensive crop failures—blossom end rot in tomatoes, tip burn in lettuce, and interveinal chlorosis in fast-growing plants—that cost yields when secondary nutrients become limiting factors.

Features

🦴

Concentrated Cal-Mag Formula

5% calcium and 1.5% magnesium in readily available forms for fast correction

🛡️

Prevents Common Deficiencies

Stops blossom end rot, tip burn, and interveinal chlorosis before they impact yields

🔗

Chelated Iron Included

0.1% DTPA iron prevents chlorosis that accompanies Cal-Mag imbalances

💧

Fully Soluble Formula

Won't clog drip emitters, spray lines, or irrigation systems at recommended rates

🌱

Fast-Growing Plant Support

Prevents secondary nutrient deficiencies in high-performance crops

🔄

Universal Compatibility

Mixes with most fertilizers, including General Hydroponics Liquid KoolBloom Nutrients, and works in all systems

What's Included

1x bottle of CaliMagic (size varies by selection)

Specifications

Specification	Value
Total Nitrogen (N) (1.0% Nitrate Nitrogen)	1.0%
Available Phosphate (P₂O₅)	0%
Soluble Potash (K₂O)	0%
Calcium (Ca)	5.0%
Magnesium (Mg) (1.5% Water Soluble Magnesium)	1.5%
Iron (Fe) - Chelated	0.1%
Derived From	Calcium Carbonate, Magnesium Nitrate, Iron DTPA
Available Sizes	Multiple sizes available
Compatible Crops	Hemp, Cannabis, Tomatoes, Lettuce, Vegetables, Herbs, Fruits, Flowers, All High-Value Crops
Compatible Media	Coco Coir, Hydroponics, Soil, Rockwool, Peat-lite Mix, All Growing Systems
Application	Preventative Supplementation, Deficiency Correction, Full Plant Lifecycle

Support & Manuals

📄FloraSeries Feed Chart (10-Part System)📄Product Label 📄Safety Data Sheet (SDS)

FAQ

When do I need to use CaliMagic?+

Use CaliMagic whenever you're growing in coco coir (which binds calcium), using RO or filtered water (which lacks minerals), running LED lighting (which increases Cal-Mag demands), or feeding base nutrients that don't contain adequate calcium-magnesium. It's also essential for fast-growing plants, calcium-intensive crops like tomatoes and lettuce, and any time you see tip burn, blossom end rot, or interveinal chlorosis indicating deficiency.

Why is calcium-magnesium supplementation necessary in coco coir?+

Coco coir has a high cation exchange capacity that naturally binds calcium and magnesium, making these nutrients less available to plants even when present in fertilizers. Without supplementation, coco-grown plants experience deficiencies despite adequate feeding. CaliMagic provides extra calcium and magnesium to compensate for what coco binds, ensuring plants have access to sufficient levels for cell wall formation, enzyme function, and chlorophyll production.

How does CaliMagic prevent blossom end rot?+

Blossom end rot is caused by calcium deficiency in developing fruits, typically resulting from inadequate calcium supply or poor calcium transport within the plant. CaliMagic ensures sufficient calcium availability in the root zone, while the included nitrogen supports the transpiration and vascular functions that move calcium to fruit tissues. Consistent CaliMagic application prevents the localized calcium deficiency that causes the characteristic black, sunken lesions on fruit bottoms.

Can I use CaliMagic with my existing nutrient program?+

Yes, CaliMagic is designed to supplement any base nutrient program. It is perfectly compatible with the FloraSeries—consisting of General Hydroponics FloraGro Nutrients, FloraBloom, and FloraMicro—as well as the General Hydroponics FloraNova Grow Nutrients and FloraNova Bloom Nutrients lines. Simply add CaliMagic to your reservoir along with your regular fertilizers.

Why does CaliMagic include iron?+

The 0.1% chelated iron (DTPA) prevents iron chlorosis that often accompanies calcium-magnesium deficiencies. High calcium levels can interfere with iron uptake, and magnesium is essential for chlorophyll formation which requires iron. By including chelated iron, CaliMagic ensures all three nutrients work synergistically rather than creating secondary deficiencies. The iron also helps maintain deep green foliage even under high Cal-Mag feeding rates.

How much CaliMagic should I use per gallon?+

Typical application rates are 1-2 ml per gallon (approximately 1/4 to 1/2 teaspoon per gallon) for preventative supplementation, potentially increasing to 3-5 ml per gallon for acute deficiency correction or when growing in pure coco coir. Start at lower rates and increase based on plant response. Check the product label for specific recommendations based on your growing method, water source, and crop type.

Do I need CaliMagic if my base nutrients already contain Cal-Mag?+

It depends on your conditions. While professional base nutrients like General Hydroponics FloraPro Calcium + Micros are comprehensive, growers using RO water or LED lighting typically need extra Cal-Mag regardless of base nutrient content. If you're using tap water in soil-based media with nutrients that already include Cal-Mag, you may not need additional supplementation. Monitor plants—if you see deficiency symptoms, supplement with CaliMagic.

Can I use CaliMagic as a foliar spray?+

While CaliMagic is primarily designed for root-zone application, it can be used as a foliar spray at reduced concentrations (typically 1/4 strength or less) to address acute deficiencies. However, calcium moves poorly within plants, so foliar application only treats sprayed tissues rather than correcting systemic deficiency. For best results, apply CaliMagic through your regular feeding program to ensure consistent calcium and magnesium availability to all plant tissues.

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