General Hydroponics CALiMAGic 1-0-0 - 2.5gal

Concentrated Cal-Mag Supplement for Fast-Growing Plants, 2.5gal

Fast-growing plants pull calcium and magnesium out of a growing medium faster than many base feeding programs replace them, and the resulting deficiency often shows up as blossom end rot, tip burn, or interveinal chlorosis before a grower realizes what caused it. General Hydroponics CALiMAGic 1-0-0 is a concentrated calcium-magnesium supplement built to correct those deficiencies before they affect yield.

The 2.5gal size suits growers correcting cal-mag deficiencies across more plants or multiple rooms without stepping up to a 6gal container.

Key Features & Benefits

• 1-0-0 cal-mag formula — delivers concentrated calcium and magnesium without adding nitrogen, phosphorus, or potassium.
• Prevents blossom end rot — corrects the calcium shortfall commonly behind blossom end rot in fruiting crops.
• Prevents tip burn — addresses the calcium deficiency that shows up as leaf tip burn in fast-growing plants.
• Corrects interveinal chlorosis — supplies magnesium to correct the yellowing between leaf veins that signals a deficiency.

Who Should Use CALiMAGic

Growers running fast-growing crops, high-intensity feeding programs, or reverse-osmosis water — all conditions that commonly create calcium and magnesium shortfalls — are the fit for CALiMAGic. It layers onto an existing base nutrient program.

About General Hydroponics

General Hydroponics has formulated liquid hydroponic and soil nutrients since Lawrence Brooke founded the California company in 1976, and it has operated within the Hawthorne Gardening Company portfolio, a Scotts Miracle-Gro subsidiary, since 2015.

Frequently Asked Questions

What deficiencies does CALiMAGic address?

CALiMAGic is formulated to prevent and correct blossom end rot, tip burn, and interveinal chlorosis, all common symptoms of calcium and magnesium deficiency. Correcting those deficiencies early helps protect yield rather than reacting after visible damage appears.

When should I add CALiMAGic to my feeding schedule?

It is commonly used throughout the growing cycle for fast-growing plants, and especially for growers using reverse-osmosis water or coco coir, both of which are prone to calcium and magnesium shortfalls. Follow the label's dilution rate for your feeding program.

What is interveinal chlorosis?

Interveinal chlorosis is yellowing that appears between the veins of a leaf while the veins themselves stay green, and it is a common visual sign of a magnesium deficiency. CALiMAGic supplies magnesium specifically to correct that shortfall.

Do I still need my base nutrient program?

Yes, CALiMAGic is a 1-0-0 supplement focused on calcium and magnesium, not a complete feeding program, so it is meant to be layered onto an existing base nutrient schedule. Continue your regular feeding alongside it.

Why do fast-growing plants need extra cal-mag support?

Rapid growth draws calcium and magnesium out of the root zone faster than many standard feeding programs replace them, so deficiencies can appear even when the rest of the program looks complete. CALiMAGic is concentrated specifically to keep pace with that faster uptake.