Technaflora MagiCal (4 liter) is a highly enriched, highly soluble blend of magnesium, iron, and calcium formulated for both soil and soilless gardens. Added to a regular feeding program, it helps correct and prevent the deficiency disorders that commonly stall otherwise healthy plants, supporting greener foliage, denser fruit, and a strong root system.
MagiCal is a secondary- and micronutrient supplement, not a base feed. It is designed to run alongside whatever grow and bloom nutrients you already use, topping up the three elements that growers most often run short on: magnesium, calcium, and iron. Because it is highly soluble and compatible with other nutrients, it slots into existing reservoir schedules without forcing a change of base line. The 4 liter bottle is the mid-size option for growers who use MagiCal regularly across a full crop cycle.
Technaflora MagiCal Specifications
Key facts for this size and formulation. Shipping weight is taken from the product record; the guaranteed analysis and exact ratios should be confirmed against the label on the bottle you receive, as manufacturers periodically revise formulations.
| Specification | Value |
|---|---|
| Product | Technaflora MagiCal |
| Container size | 4 liter |
| Type | Magnesium, iron and calcium supplement |
| Primary nutrients | Magnesium (Mg), Iron (Fe), Calcium (Ca) |
| Solubility | Highly soluble; mixes into solution readily |
| Suitable media | Soil and soilless gardens |
| Nutrient compatibility | Works in conjunction with any nutrient line |
| Shipping weight | Approx. 12 lb |
Why Choose Technaflora MagiCal
Magnesium, calcium, and iron are the three nutrients most often missing when a plant looks healthy on paper but underperforms in the canopy. Magnesium sits at the center of the chlorophyll molecule, so a shortage shows up as yellowing (chlorosis) between the veins of older leaves. Calcium builds and holds cell walls together, and when it runs low the symptoms are structural: blossom end rot in fruit, stem rot, and burnt-looking leaf tips. Iron is needed for chlorophyll formation too, and a deficiency typically pales the newest growth at the top of the plant. MagiCal targets all three in a single bottle, which is why growers reach for it instead of stacking separate cal-mag and iron products.
The formula is built for flexibility. It is highly soluble, so it dissolves cleanly into a reservoir or watering can without leaving sediment, and it is designed to work in conjunction with any nutrient program rather than locking you into one brand. That makes it a practical add-on whether you run a synthetic base feed, a coco-specific line, or a soil regimen. Because it is a supplement rather than a complete fertilizer, you keep full control of your base NPK and simply layer MagiCal on top to address the secondary and micronutrient gaps.
Beyond correcting deficiencies, the manufacturer positions MagiCal as a quality builder. Used consistently in a feeding program, it is described as accelerating protein synthesis, maintaining high starch content in crops, improving the density of fruit and the production of essential oils, creating lusher and greener foliage, and helping maintain a healthy root system. The 4 liter size is sized for growers who have already proven the product on a smaller bottle and want a longer-lasting supply for ongoing use.
Best Uses for Technaflora MagiCal
Preventing cal-mag deficiencies in coco and soilless mixes. Coco coir and many inert soilless blends hold onto calcium and magnesium or release them unevenly, so growers in these media often see deficiency symptoms even with a complete base feed. Adding MagiCal to the regular feeding program keeps magnesium, calcium, and iron available and helps prevent the interveinal yellowing and tip burn that otherwise appear mid-cycle.
Stopping blossom end rot and tip burn in fruiting crops. Calcium moves poorly inside the plant, so fast-growing fruit and new tips are the first to suffer when supply lags demand. MagiCal supplies supplemental calcium to reduce blossom end rot, stem rot, and tip burn in tomatoes, peppers, and other fruiting plants run in soil or hydroponics.
Greening up pale, slow canopies. When older leaves yellow between the veins or new growth comes in pale, a magnesium or iron shortfall is a common cause. Folded into a normal feed, MagiCal helps restore chlorophyll production for greener foliage and more vigorous growth across both soil and soilless gardens.
Compatibility
MagiCal is formulated to work in conjunction with any nutrient line, so it does not require you to abandon your existing base feed. It is a supplement that layers on top of a grow or bloom program to top up magnesium, calcium, and iron. As with any supplement, add it to your reservoir or mixing container and stir before introducing other concentrated additives, then check and adjust pH after everything is combined, since secondary-nutrient inputs can shift the solution.
If you are assembling a wider feeding program around MagiCal, it pairs naturally with other targeted additives. Growers building biological and root health alongside their mineral feed often run a microbial inoculant such as Advanced Nutrients Tarantula to support the rhizosphere, and a carbohydrate or molasses source like Earth Juice Hi-Brix Molasses to feed soil and reservoir microbes. For organic root and bloom support in larger gardens, Heavy 16 Roots is a common companion. MagiCal addresses the mineral side of the equation while these products cover biology and carbohydrates.
Usage Guidelines
MagiCal is a supplement, so the most important rule is to follow the dosing rate printed on the 4 liter label for your media and growth stage; rates differ between soil and soilless gardens and between vegetative and flowering phases. Because the canonical product record does not publish a specific milliliter-per-liter rate, treat the label as the authoritative source and start at the lower end of any listed range.
General handling practice for a supplement of this type:
- Shake the bottle before measuring so the blend is evenly mixed.
- Add MagiCal to water or to your made-up nutrient solution and stir until fully dissolved; it is highly soluble and should go into solution without residue.
- Incorporate it into your regular feeding program rather than as a one-off, since the deficiency-prevention benefits build with consistent use.
- Check pH after mixing all nutrients and additives, and adjust into your target range for soil or hydroponics.
- If you are correcting an active deficiency, watch new growth over the following one to two weeks; new leaves emerging green is the sign the supplement is working.
Keep the bottle sealed and stored away from direct sunlight and freezing temperatures, and keep it out of reach of children and pets.
Sources & Further Reading
Always confirm the current guaranteed analysis and dosing rates against the label on the bottle you receive. For manufacturer information, see the Technaflora official site. The product description and feature claims above are drawn from the manufacturer-supplied product copy for Technaflora MagiCal.













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