Roots Organics Elemental – 3 lb

Roots Organics Elemental is a calcium-magnesium supplement in a convenient 3 lb pack, designed to augment calcium and magnesium levels in fast-growing plants. Calcium supports cell wall integrity and essential biochemical processes, while magnesium is the central component of the chlorophyll molecule. Elemental addresses two of the most common macronutrient deficiencies that occur during rapid vegetative and flowering growth, supporting more vigorous plants and larger yields.

Roots Organics Elemental Specifications

Elemental is formulated as a dry supplement that delivers calcium and magnesium — two macronutrients that fast-growing plants frequently exhaust before the next scheduled feeding. The table below covers the key product specifications drawn from manufacturer data and the canonical product record.

Specification	Value
Brand	Roots Organics
SKU / Part Number	ROEL3
Pack Size	3 lb (approx. 1.36 kg)
Supplement Type	Dry calcium-magnesium (Cal-Mag) supplement
Primary Macronutrients	Calcium (Ca), Magnesium (Mg)
Category	Nutrients & Additives — Growth & Bloom Boosters
Target Plants	Fast-growing crops susceptible to Cal-Mag deficiency

Why Choose Roots Organics Elemental

Calcium and magnesium deficiencies are among the most frequently encountered nutritional problems in fast-growing crops. When plants are drawing heavily on a nutrient reservoir — whether in coco coir, hydroponic solution, or amended soil — calcium and magnesium are often the first macronutrients to fall short. Elemental was created specifically to address this gap.

• Targets the two most common fast-crop deficiencies. Elemental directly addresses calcium and magnesium shortfalls that become apparent during vigorous vegetative and bloom phases. Early correction prevents the stunted growth, leaf curl, and interveinal chlorosis associated with these deficiencies.
• Calcium supports structural plant health. Calcium plays a foundational role in cell walls and membranes, as well as in a range of biochemical processes that influence overall plant strength. Plants with adequate calcium show better stem integrity and improved resistance to physical stress.
• Magnesium feeds the chlorophyll molecule directly. Magnesium is the central atom of the chlorophyll molecule, making it indispensable for photosynthesis. A supplement that delivers bioavailable magnesium helps maintain the deep green color and photosynthetic efficiency growers want throughout the crop cycle.
• Dry format with a convenient pack size. The 3 lb bag stores easily and provides a substantial supply for small to mid-scale operations. Dry formulations have a longer shelf life than liquid Cal-Mag concentrates and are less susceptible to precipitation or separation in storage.
• From a soil-focused organic brand. Roots Organics has built its reputation around products designed for organic and natural growing methods. Elemental fits within that philosophy, complementing soil mixes, coco-based media, and other grow substrates used in organic programs.

Best Uses for Roots Organics Elemental

Elemental is most useful when fast-growing plants are showing early signs of calcium or magnesium deficiency, or when a grower wants to prevent those deficiencies before symptoms appear. It fits into a wide range of growing programs.

• Coco coir cultivation. Coco is calcium-hungry by nature — the fiber has a cation exchange capacity that preferentially holds calcium, which means plants in coco can exhibit deficiency symptoms even when the nutrient solution appears balanced. Supplementing with Elemental is standard practice among experienced coco growers to keep calcium at adequate levels throughout the grow.
• Recirculating deep water culture (RDWC) and NFT systems. In hydroponic systems where the reservoir is replenished frequently, calcium and magnesium can be diluted faster than other nutrients. Adding Elemental helps maintain stable Ca and Mg concentrations between reservoir changes, particularly during heavy vegetative growth.
• Soil and amended media programs with soft or RO water. Growers using reverse osmosis water or low-mineral tap water lack the baseline calcium and magnesium that come with harder water sources. Elemental fills that mineral gap in the nutrient profile, preventing the deficiencies that RO-water gardens commonly encounter.
• Correcting mid-cycle deficiency symptoms. When interveinal chlorosis, upward leaf curl, or tip burn appear mid-cycle, a targeted Cal-Mag supplement like Elemental can help stabilize the plant faster than adjusting the entire base nutrient mix. It is easier to add a dedicated supplement than to reformulate a full nutrient program mid-crop.
• Preventive supplementation in high-yield programs. Growers pushing yields with high light intensities or aggressive feeding schedules tend to see faster calcium and magnesium uptake rates. Incorporating Elemental proactively, from early vegetative through late bloom, reduces the risk of deficiency-related yield loss.

Elemental pairs well with other soil conditioners and root-zone products. If you are also managing root health in your program, see the Advanced Nutrients Tarantula 250 mL beneficial microorganism supplement, which supports root colonization and can improve calcium and magnesium uptake efficiency. For programs that incorporate organic carbon sources, the Earth Juice Hi-Brix Molasses for Plants is a compatible carbohydrate supplement used alongside Cal-Mag programs in soil and organic media.

Roots Organics Elemental vs Similar Products

The Cal-Mag supplement category includes both liquid and dry formulations from multiple brands. Elemental occupies the dry-format segment of that category.

Elemental vs liquid Cal-Mag concentrates. Liquid Cal-Mag concentrates (sold by a range of hydroponic nutrient companies) are pre-dissolved and begin acting in the root zone as soon as they are added to solution. Elemental is a dry supplement, which means it needs to be dissolved in water before use or incorporated directly into a substrate mix. The trade-off is that dry formats are more compact per unit of nutrient delivered, easier to ship without leakage risk, and typically have a longer shelf life. Liquid concentrates are faster to measure and mix for reservoir feeding, while dry formulations can also be worked directly into potting media as a soil amendment.

Elemental vs chelated Cal-Mag products. Some Cal-Mag supplements use chelated forms of calcium and magnesium, which are pre-bound to organic acids to improve bioavailability in a wider pH range. Elemental is formulated as a macronutrient and micronutrient supplement by Roots Organics; specific chelation details should be confirmed with the manufacturer’s current product data sheet. Chelated products tend to cost more per unit of nutrient and are favored in situations where pH swings are difficult to control.

Elemental vs crab meal and other organic mineral sources. Organic growers sometimes use mineral-rich meal products — such as the Down to Earth Crab Meal 40 lb — as a slow-release calcium source in soil. Crab meal releases calcium slowly as it breaks down microbially, making it a longer-term soil amendment rather than a fast-acting supplement. Elemental is better suited for situations requiring a quicker correction or more precise control over calcium and magnesium delivery rates.

Compatibility

Roots Organics Elemental is intended for use across the common growing media and system types used in controlled-environment agriculture and hobby growing.

Growing media compatibility. Elemental is suitable for use in soil, coco coir, peat-based mixes, and soilless substrates. Its primary application is as a water-soluble supplement dissolved into the irrigation stream, though dry Cal-Mag supplements can also be incorporated into a substrate prior to planting.

System compatibility. The supplement can be used in hand-watered containers, drip systems, flood-and-drain (ebb-and-flow) tables, and recirculating hydroponic systems. When used in recirculating systems, ensure the supplement is fully dissolved before adding it to the reservoir to prevent undissolved particles from affecting pumps or emitters.

Nutrient program compatibility. Elemental is designed to augment an existing base nutrient program, not replace it. It is compatible with organic base nutrients, synthetic base nutrients, and two-part or three-part nutrient systems. When adding any Cal-Mag supplement to an existing nutrient mix, check the overall EC of the solution and compare it to the target EC range for the current growth stage to avoid over-fertilization.

Water type. Elemental is especially well-matched to programs using reverse osmosis water, rainwater, or low-mineral municipal water sources where the baseline calcium and magnesium content is low. Growers with naturally hard water (high Ca/Mg content) should test their source water before supplementing to avoid excess accumulation.

Dosing Guidelines

The following dosing guidance is based on standard Cal-Mag supplement practices for dry supplements. Refer to the current Roots Organics product label for exact dose rates, as formulations may be updated. Always measure accurately and adjust based on plant response and EC readings.

1. Determine your water baseline. Before adding Elemental, test your source water for existing calcium and magnesium concentrations. Soft or RO water with near-zero mineral content will require a higher supplemental dose than water with moderate hardness.
2. Measure the recommended dose per gallon or litre. Use a calibrated measuring spoon or digital scale to weigh the dry supplement accurately. Dry Cal-Mag supplements are typically applied at rates between 1–2 teaspoons per gallon of water, but follow the Roots Organics label for Elemental’s specific rate.
3. Dissolve in warm water first. Add the measured dry supplement to a small volume of warm water (approximately 70–80°F / 21–27°C) and stir until fully dissolved before adding to your reservoir or irrigation tank. This prevents undissolved granules from settling at the bottom of the reservoir.
4. Add to your nutrient solution and check EC. After dissolving Elemental and adding your base nutrients, measure the combined EC of the solution. Adjust total nutrient concentration to match the target EC for your crop’s current growth stage.
5. Adjust pH after all additions. Once all nutrients and supplements are mixed, adjust the pH of the final solution to the appropriate range for your growing medium — typically 5.8–6.2 for coco and hydroponic systems, or 6.0–6.8 for soil.
6. Monitor plant response and adjust weekly. Watch for signs of calcium deficiency (tip burn, distorted new growth) or magnesium deficiency (interveinal chlorosis on older leaves). Adjust the dose in small increments based on what you observe rather than making large changes all at once.

Sources & Further Reading