FloraMax Ca-Mg-Fe ProPowder – Cal-Mag-Iron + 6 Trace Elements

FloraMax Ca-Mg-Fe ProPowder is a comprehensive cal-mag additive in soluble powder form that goes beyond standard calcium and magnesium supplements. It contains nine essential elements – calcium, magnesium, iron, copper, manganese, zinc, molybdenum, boron, and nitrogen – because common deficiencies are caused by this full group, not just cal-mag alone. The trace elements are made from alkaline-resistant compounds that remain stable at pH levels up to 10, making Ca-Mg-Fe particularly effective with hard or high-pH water. Designed for use with other brands' base nutrients during veg and flower.

Key Benefits

• Contains nine essential elements (Ca, Mg, Fe, Cu, Mn, Zn, Mo, B, N) — addresses the full spectrum of common deficiencies, not just cal-mag.
• Helps prevent leaf yellowing, leaf curl, stunted growth, withered fruit set, and bud rot.
• Trace elements are made from alkaline-resistant compounds stable at pH levels up to 10, protecting against lockout in hard or high-pH water.
• 100% compatible with all liquid or powdered base nutrients from other brands.
• Dissolves completely within minutes, even in cold or hard water.
• Can be dosed dry directly into the reservoir, made into a stock solution, or pre-mixed dry with other FloraMax ProPowder products.

Specifications

How to Use

• Add dry powder directly to your reservoir at 0.3–0.6 g/L (1.2–2.3 g/Gal), or dissolve into an ultra-stable stock solution first.
• Use throughout both veg and flower at every feed.
• Can be pre-mixed dry with other FloraMax ProPowder products before adding to the reservoir.
• Important: Do not use Ca-Mg-Fe with FloraMax VegaFlora A+B or Veg-1 — these base nutrients already contain sufficient cal-mag and trace elements. Using Ca-Mg-Fe alongside them may cause toxicity. Ca-Mg-Fe is designed for use with other brands' base nutrients that are deficient in these elements.

Frequently Asked Questions

Why does Ca-Mg-Fe contain more than just calcium and magnesium?

Most nutrient deficiency symptoms are caused by one of nine elements: calcium, magnesium, iron, copper, manganese, zinc, molybdenum, boron, or nitrogen — not just cal-mag. Ca-Mg-Fe addresses the full spectrum in a single additive.

Can I use Ca-Mg-Fe with FloraMax Veg-1 or VegaFlora?

No. FloraMax base nutrients already contain sufficient cal-mag and trace elements. Ca-Mg-Fe is designed for use with other brands' base nutrients that are deficient in these elements.

Is Ca-Mg-Fe suitable for hard water or high-pH conditions?

Yes. The trace elements in Ca-Mg-Fe are made from alkaline-resistant compounds that remain stable at pH levels up to 10. This makes it particularly effective where other cal-mag products become unstable and cause lockout.

When should I use Ca-Mg-Fe?

Throughout both veg and flower at 0.3–0.6 g/L. If deficiency symptoms appear, FloraMax recommends starting at the lower dose and increasing if symptoms persist after one week.

Using Ca-Mg-Fe with the FloraMax Range

Ca-Mg-Fe ProPowder is designed for use with other brands' base nutrients. If you're using FloraMax Veg-1 ProPowder or VegaFlora A+B, cal-mag and trace elements are already built in — no Ca-Mg-Fe is needed. The FloraMax system includes Flowering Enhancer ProPowder which provides additional cal-mag-iron during bloom.

Browse the full FloraMax range or read our Beginner's Guide to Hydroponics to get started.