TechnaFlora MagiCal 4L - Supplements

What It Is

TechnaFlora MagiCal is a concentrated liquid supplement delivering calcium (3.25%), magnesium (1.25%), and chelated iron (0.11% via Iron EDTA) in a single, fully water-soluble solution. It carries a 2-0-0 NPK rating, meaning nitrogen is present as the carrier for calcium nitrate and magnesium nitrate — not as a primary macro source — so MagiCal adds meaningful secondary and micronutrient support without significantly pushing your base nitrogen load.

The formula is derived from calcium nitrate, calcium chloride, magnesium nitrate, and Iron EDTA. That chelated iron source (EDTA) remains plant-available across a broad pH range, which is especially useful in recirculating hydro systems where pH drift is constant. The solution is clear and sediment-free, meaning it won't clog drip emitters, injection systems, or drip tape when dosed correctly.

Who It's For

MagiCal is well-suited to any commercial cannabis or hemp operation running moderate-to-high EC programs in coco, rockwool, or deep-water culture — media and systems that are inherently low in naturally occurring calcium and magnesium. High-output LED rooms and double-ended HPS rooms both drive higher transpiration rates, which can accelerate Ca and Mg pull and increase the likelihood of interveinal chlorosis, tip burn, and blossom-end-type symptoms under heavy flower loads.

Operations running RO or low-mineral source water will almost always need supplemental Ca and Mg regardless of base nutrient brand. MagiCal is also a practical in-between-feeding supplement: Technaflora's own guidance notes it can be added at 15 mL per gallon of plain water between full-nutrient feeding days to keep Ca and Mg levels stable without spiking EC from a full feed. That pattern works well in soil programs running a feed-water-water rotation.

Key Features

Fully water-soluble and sediment-free: MagiCal mixes clear into any solution and does not require agitation or pre-mixing. This keeps injection systems and fertigation lines clean and makes it straightforward to add mid-tank without compatibility concerns.

Chelated iron source (Iron EDTA): EDTA chelation keeps iron in plant-available form across a wider pH window than unchelated iron salts, reducing the risk of iron lockout in slightly alkaline reservoirs. The inclusion of iron alongside calcium and magnesium addresses the full triad of deficiencies that typically appear together — yellowing canopy, interveinal chlorosis, and poor cellular integrity in new growth.

Broad compatibility: MagiCal is chemically stable and compatible with any base nutrient line. It functions as a standalone Ca-Mg-Fe supplement layered into an existing program rather than requiring a full system change. It also supports protein synthesis and cellular structure development, which contributes to improved fruit density and essential oil retention — both relevant metrics for cannabis flower quality.

How It Fits a Commercial Build

For large-scale operations, the 4-liter format is a practical mid-tier size — larger than the 1L for daily-use efficiency, and a cost-effective entry point before scaling to 10L or 20L formats as program volumes grow. Commercial grows typically dose MagiCal at 1–2 teaspoons (approximately 5–10 mL) per gallon of nutrient solution for standard hydroponic applications, or 1 tsp per gallon for soil programs. Accelerated correction of active deficiencies is achieved by pushing toward the higher end of that range.

MagiCal fits cleanly into any room running the TechnaFlora Recipe for Success line, but it is equally effective as a Ca-Mg-Fe supplement layered into non-TechnaFlora base programs. If your operation is already running a separate base and simply needs a reliable, sediment-free calcium-magnesium-iron supplement that won't create compatibility headaches in a mixed tank, MagiCal is a straightforward choice. The 4L bottle is available through HSC with wholesale account pricing — request a quote for case quantities and freight details.