Liquid Ca/Mg/Fe supplement — corrects deficiencies fast across hydro, coco, and soil.
TechnaFlora MagiCal is a concentrated liquid calcium, magnesium, and iron supplement formulated to correct mid-cycle deficiencies and support cellular integrity across every growth stage. Fully water-soluble with zero sediment — drops cleanly into any reservoir or fertigation line without compatibility issues.
TechnaFlora MagiCal is a liquid secondary-nutrient and micronutrient supplement carrying a 2-0-0 NPK with a guaranteed analysis of 3.25% calcium, 1.25% magnesium, and 0.11% chelated iron. It is derived from Calcium Nitrate, Calcium Chloride, Magnesium Nitrate, Iron EDTA, and Iron DTPA — forms selected for high bioavailability and immediate plant uptake.
The formulation is completely water-soluble and clear of sediment, meaning it mixes into any reservoir or hand-watering solution without settling or clogging drip emitters. It carries a working pH range compatible with standard hydroponic and soil-based programs and integrates with any existing base nutrient line — TechnaFlora's own B.C. series or third-party brands.
Calcium and magnesium are the two secondary macronutrients most commonly under-delivered in commercial cannabis and hemp production. Reverse-osmosis water, coco coir substrate, and high-frequency fertigation all strip or limit Ca and Mg availability. The first signs show up as interveinal chlorosis, tip burn, blossom end disorders, and in flowering, reduced bud density and poor trichome development.
MagiCal is the correct tool when a grow room is running soft or RO water, running coco coir as a primary medium, observing yellowing mid-canopy during transition, or pushing high PPFD environments where nutrient demand spikes. It is also the appropriate first supplement to layer into any base nutrient program that does not include an endogenous calcium source — common in organic or single-part concentrates.
Rapid deficiency correction: the chelated iron fractions (EDTA and DTPA) remain plant-available across the pH ranges typical in commercial systems, and the nitrate-bound calcium form is immediately soluble — no waiting for microbial breakdown. This matters in a licensed facility where a deficiency visible on Monday needs to be addressed, not managed over a week.
Compatibility is broad by design. MagiCal is chemically stable and works in recirculating hydroponic systems, drain-to-waste coco programs, and amended soil grows alike. It will not destabilize mixed reservoirs when added in sequence with base nutrients. Beyond deficiency correction, sustained use at maintenance rates supports protein synthesis, cellular structure, and — relevant to cannabis — the production of essential oils through consistent flower bud development.
Soil application: 1 teaspoon (approximately 5 mL) per gallon of water, applied with regular waterings. Hydroponic and coco application: 1–2 teaspoons (5–10 mL) per gallon of nutrient solution, adjusted based on source-water hardness and base-nutrient calcium content. Deficiency correction (accelerated rate): up to 2 teaspoons per gallon until symptoms resolve, then step back to maintenance rate. TechnaFlora's own guidance also notes that 15 mL per gallon can be used as a between-feeding water addition when plants signal they need additional mineral support.
At the 1L bottle size, MagiCal is well-suited for smaller licensed operations, R&D rooms, or growers evaluating the product before committing to 4L or 20L volume. HSC carries the full TechnaFlora line — contact us for volume pricing on larger formats.
| Brand | TechnaFlora |
| SKU | TF-MAG-1L |
| Container Size | 1 Liter |
| NPK | 2-0-0 |
| Calcium (Ca) | 3.25% |
| Magnesium (Mg) | 1.25% |
| Iron (Fe) | 0.11% |
| Derived From | Calcium Nitrate, Calcium Chloride, Magnesium Nitrate, Iron EDTA, Iron DTPA |
| Formulation | Liquid concentrate — fully water-soluble, clear, sediment-free |
| Compatible Media | Hydroponics, coco coir, soil, soilless / peat-based |
MagiCal is designed to work with any base nutrient brand. TechnaFlora formulated it to be chemically stable alongside third-party nutrients, so it integrates cleanly whether you are running a two-part, three-part, or single-part base program. Add it to your reservoir in the standard order — after silica if you use it, before pH adjustment.
RO water contains essentially zero calcium and magnesium, so yes — if your base nutrients do not supply sufficient Ca and Mg (check the guaranteed analysis), a Cal-Mag supplement like MagiCal should be a standard part of every feed. Most commercial base nutrients formulated for RO water include some Ca and Mg, but many growers find they still need to top up, especially in coco or during heavy-feeding flower stages.
Calcium deficiency typically presents as brown necrotic spots on newer growth, curling leaf tips, and weakened stem tissue. Magnesium deficiency shows as interveinal chlorosis on older, lower leaves — the veins stay green while the tissue between them yellows. Iron deficiency looks similar but starts on the newest growth. Before adding MagiCal, confirm your root-zone pH is in range (5.8–6.3 hydro / 6.0–6.8 soil), because lockout from pH drift can mimic true deficiency.
No. MagiCal is fully water-soluble and formulated to remain clear with zero sediment. It is safe for drip irrigation, recirculating hydroponic systems, flood-and-drain tables, and dosatron-style proportioners. Mix it into your reservoir or stock tank fully before introducing it to the line.
Yes. The TechnaFlora MagiCal line is available in 1L, 4L, 10L, and 20L formats through HSC. If you are running multiple rooms or need to spec volume purchasing for a new build or expansion, contact us for a quote on larger sizes.
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