Athena Blended CaMg

What It Is

Athena Blended CaMg is a liquid calcium, magnesium, and iron supplement designed to pair with Athena's two-part Blended Line — Grow A/B through vegetative and Bloom A/B through flower. The NPK is 2-0-0, with the nitrogen delivered entirely as nitrate nitrogen. The guaranteed analysis reads 2.1% calcium, 1.1% water-soluble magnesium, and 0.06% chelated iron — a ratio sized to address real secondary and micronutrient gaps without overcorrecting or creating antagonism with the base nutrient program.

Because it is a liquid concentrate, CaMg integrates cleanly into any dosing system: drip, recirculating, hand-water, or Dosatron. It is sediment-free and does not require pre-dissolving, which makes it straightforward to dial into injector-fed fertigation systems running on tight tolerances.

Who It's For

The strongest use case is cultivation runs that strip baseline calcium and magnesium from the water before it reaches the plant. That means licensed cannabis and hemp operators running reverse osmosis water, and anyone growing in inert media — coco coir or rockwool — where the substrate contributes nothing to the mineral profile. RO water starts at near-zero mineral content, and coco and rockwool offer no buffering capacity, so the full Ca/Mg/Fe load falls entirely on the nutrient program. If the base two-part alone doesn't fully cover peak demand, deficiency symptoms appear fast and recovery time cuts into run efficiency.

CaMg is also the right tool for cultivars and phenotypes that historically show calcium or magnesium pull during heavy vegetative push or mid-flower stretch — periods where plant demand spikes and even a well-formulated base program may fall short under high-PPFD or high-temperature conditions. It is useful at any scale, from single-room craft operators to multi-room commercial facilities running Athena on injection systems.

Key Features

The formulation delivers calcium, magnesium, iron, and nitrogen in a single liquid additive — no separate chelate product required. Iron is supplied in chelated form, which keeps it plant-available across a wider pH range than non-chelated iron sources. The nitrate nitrogen (2%) is included at a level that supports uptake chemistry without skewing the total N balance in the feed program.

Athena designed CaMg specifically to integrate with the elemental ratios in Grow A/B and Bloom A/B, so adding it at label rates does not push the nutrient solution out of balance the way a generic cal-mag product can when bolted onto a program it wasn't built for. The application window is open across all growth stages — the dose is adjusted based on observed plant response and feed schedule guidance, not locked to a specific week.

Packaging is available in 1-gallon and 5-gallon formats. The formula is compatible with all irrigation system types, including fine dripper heads and micro-emitters. Best practices call for shaking well before each use and using clean measuring instruments — consistent with standard liquid concentrate handling for a commercial feed room.

How It Fits a Commercial Build

For operators already running the Athena Blended Line, CaMg sits outside the core two-part rotation as a conditional add. It is not required in every run or every week — Athena's own feed schedules flag when and at what rate to incorporate it based on water source and media type. This keeps the overall program lean: two products per stage plus targeted supplementation only when conditions call for it.

In a commercial facility running RO water and coco, CaMg is typically incorporated from week one through harvest at a consistent low dose, with upward adjustments during peak vegetative and early-flower demand. For operators on municipal water with moderate mineral content, use may be intermittent or stage-specific. Either way, the dose range of 2–10 mL per gallon gives enough latitude to cover both situations from the same product. Operators transitioning to the Athena Blended Line from a multi-additive program often find CaMg is the only secondary/micro supplement they need to carry alongside the base two-part.