Mega Mass Nutrients - Chelated Iron 6% (EDDHA) 250g

Mega Mass Chelated Iron 6% EDDHA is a dark red, microgranular, water-soluble source of iron used to correct and prevent iron deficiency in agricultural and horticultural crops.

EDDHA chelation helps keep iron available under alkaline and high-pH conditions, where some other forms of iron become less available to plants. It can be applied throughout the growing season, but is especially useful in spring before active new growth begins or at planting.

What Is Chelated Iron Used For?

Chelated iron is used to correct or prevent iron deficiency. Iron deficiency commonly appears as interveinal chlorosis, where the tissue between the veins turns yellow while the veins remain greener.

Iron deficiency usually appears first on young or newly emerging leaves.

Best Suited For

• High-pH or alkaline soils
• Alkaline irrigation water
• Garden beds and containers
• Agricultural and horticultural crops
• Compatible hydroponic and aquaponic applications where supplemental iron is required

General Usage

Mix 25 g of Iron Chelate in 5 litres of water for the correction and prevention of iron deficiency in a wide range of agricultural and horticultural crops.

Aquarium & Aquaponic Use

Start with 1 teaspoon per 100 gallons of system water. Wait 2 hours, then assess the water.

Repeat as necessary until a slight red tint remains visible. The red tint indicates that plant-available chelated iron is present at satisfactory levels.

Iron Deficiency vs. Nitrogen Deficiency

Iron and nitrogen deficiencies can both cause yellow leaves, but they usually appear in different parts of the plant.

• Iron deficiency: Usually begins on younger or newly emerging leaves.
• Nitrogen deficiency: Usually begins on older or lower leaves.
• Iron deficiency pattern: Yellowing develops between the veins while the veins remain greener.
• Nitrogen deficiency pattern: Yellowing is generally more uniform across the leaf.

If yellowing begins on older leaves rather than new growth, iron deficiency may not be the primary problem.

What Else Should I Check?

Recurring iron deficiency can sometimes be caused by growing conditions rather than a complete lack of iron. If symptoms continue, check:

• Root-zone pH
• Irrigation-water pH
• Overall plant nutrition
• Root health
• Drainage and aeration

High root-zone pH can reduce iron availability even when iron is already present in the soil or growing medium.

Product Specifications

• Iron content: 6%
• Chelating agent: EDDHA
• Form: Water-soluble microgranules
• Colour: Dark red
• Package size: 250 g

Packaging Note

Your 250 g Chelated Iron will come in a white container with a paper label on the front. Because the product is sold by weight rather than volume, the container may appear only about half full. This is normal.

What Does Iron Deficiency Look Like?

Iron deficiency typically causes yellowing between the veins of young leaves while the veins remain visibly greener. The photos below show examples of iron chlorosis for comparison.