FloraMax Ca-Mg-Fe is a powerful, fully soluble supplement formulated to prevent and correct a wide range of nutrient deficiency symptoms in fast-growing, light-demanding plants. It delivers calcium, magnesium and iron chelates plus six essential trace elements copper, manganese, zinc, molybdenum and boron all in alkaline-stable forms that remain effective even when pH rises as high as 10.
This formulation excels in systems where water quality is poor (e.g. hard or high-pH water) or where pH and EC fluctuate significantly. It helps to “lock out proof” your nutrient solution by protecting trace elements and maintaining availability during challenging conditions.
With regular use (1–2 mL per Ltr), Ca-Mg-Fe supports healthy growth, preventing symptoms such as leaf yellowing (chlorosis), leaf curl, stunted development, withered fruit-set and even bud rot.
Key Features:
Comprehensive nutrient coverage – Adds calcium, magnesium, and iron plus six trace elements (Cu, Mn, Zn, Mo, B) in one formula.
Alkaline-stable trace elements – Trace elements remain soluble and available even at pH up to 10, reducing risk of lockout.
Highly soluble and concentrated – Designed as a super-concentrated liquid for easy mixing with base nutrients.
Wide compatibility – Compatible with all liquid or powdered base nutrients (but avoid combining with FloraMax VegaFlora A&B or Veg-1 due to element overlap).
Dosage: Add 1–2 mL of Ca-Mg-Fe per litre of your nutrient solution.
Frequently Asked Questions
Do I need Ca-Mg-Fe if I already use a FloraMax base nutrient?
Avoid combining with FloraMax VegaFlora A&B or Veg-1 due to element overlap these already include sufficient calcium, magnesium and trace elements. However, Ca-Mg-Fe is especially useful when serious trace-element deficiencies arise, or when using high-pH water or base feeds that lack cal-mag support.
Can I foliar-spray this product?
No FloraMax recommends against foliar-spraying Ca-Mg-Fe. Foliar application can cause calcium staining, reduced photosynthesis, and potential burning of foliage.
Is Ca-Mg-Fe suitable for soil, coco, and hydroponic systems?
Yes. It is designed to work across different growing media including hydroponics, coco coir, and soil-based systems.
Can it prevent nutrient lockout caused by pH spikes?
Yes. Because the trace elements are in alkaline-stable forms, they remain available even when the pH of your solution rises to around 10.
What if my water source has very variable pH or EC?
Ca-Mg-Fe is ideal in this situation. Its stability helps protect plants from deficiencies caused by fluctuating pH and EC, making it a great tool for “rescuing” nutrient solutions.
