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Item #:
10609173
Humboldts Secret CalMag & Iron | Calcium, Magnesium & Chelated Iron Nutrient Fertilizer | Hydroponic Supplies for Vegetative & Flowering Growth in
Item #:
10609173
AUD 95
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Imported from USA store
QTY:
Order now and get it around Tuesday, August 11
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Our well-balanced formula is designed to specifically address any plant deficiencies that may be present.
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What Stands Out
Comprehensive Nutrition
This liquid supplement provides essential calcium, magnesium, and iron, promoting healthy plant growth during both vegetative and flowering stages.
Hydroponic Optimization
Specifically formulated for hydroponic systems, ensuring efficient nutrient absorption and maximizing yields compared to traditional fertilizers.
Large Capacity
A generous 2.5-gallon size reduces frequency of purchases and provides a cost-effective solution for avid hydroponic gardeners.
Product Details
- Formulated to provide a source of calcium, magnesium, and chelated iron for flowering plants' higher micronutrient requirements
- Effectively corrects and remedies common plant deficiencies, ensuring healthy plant growth
- Supports efficient nutrient uptake and absorption, promoting vegetative and flowering stage of plants
- Suitable for hydroponics, soil, and container gardens to ensure strong and healthy plant growth and yields
- Highly recommended for use with coco coir medium and reverse osmosis water for magnified absorption process
| Brand Name | Humboldts Secret |
| Model Number | CalMag & Iron |
| Global Trade Identification Number | 00648260730406 |
| Manufacturer | Humboldts Secret |
| UPC | 648260730406 |
| Unit Count | 128 Fluid Ounces |
| Part Number | TUEEQE-06 |
| Liquid Volume | 128 Fluid Ounces |
| Item Form | Liquid |
| Specific Uses For Product | Hydroponic |
| Coverage | Medium |
| Target Species | flowering plants |
| Mixing Ratio | 2-5 ml/gallon |
| Brand | Humboldts Secret |
| Item Weight | 8.5 lbs (3.86 kg) |
Who Should Buy?
-
Hydroponic Growers
Ideal for hydroponic systems, enhancing nutrient uptake during both vegetative and flowering stages of plant growth.
-
Plant Enthusiasts
Perfect for dedicated gardeners keen on optimizing their plants’ mineral intake for robust growth and enhanced yields.
-
Vegetable Cultivators
A great choice for growers of vegetables needing extra calcium and magnesium for healthier and more productive plants.
-
Soil Growers
Not suitable for traditional soil growing methods, which may already provide sufficient nutrients naturally without supplementation.
Product Description
Humboldts Secret CalMag & Iron | Calcium, Magnesium & Chelated Iron Nutrient Fertilizer | Hydroponic Supplies for Vegetative & Flowering Growth in Soil, Coco, Hydroponics or RO Water | 1 Gallon
Dietary Supplement Disclaimer
Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Customer Questions & Answers
-
Question:
What is the purpose of Humboldts Secret Calcium, Magnesium and Iron Supplement?
Answer: Humboldts Secret Calcium, Magnesium, and Iron Supplement is specifically designed to enhance plant growth during both the vegetative and flowering stages. Calcium is essential for cell wall structure, magnesium plays a vital role in photosynthesis, and iron is crucial for chlorophyll synthesis. By providing these essential nutrients, this supplement promotes healthy growth, vibrant leaf colors, and robust flowering. It's ideal for hydroponics systems but is also effective in soil-based gardening. -
Question:
How do I use Humboldts Secret Calcium, Magnesium, and Iron Supplement?
Answer: To use Humboldts Secret Calcium, Magnesium, and Iron Supplement, mix the recommended amount with your nutrient solution according to the usage instructions on the bottle. This ensures that your plants get the proper ration of nutrients during critical growth phases. This supplement can enhance nutrient absorption in hydroponic systems or be used in soil gardening. Regular application during the growing cycles helps prevent nutrient deficiencies that hinder plant development. -
Question:
Is this supplement safe for all types of plants?
Answer: Yes, Humboldts Secret Calcium, Magnesium, and Iron Supplement is generally safe for a wide variety of plants, including fruits, vegetables, and ornamental plants. However, always check the nutrient needs of specific plants, as different species may require varying concentrations. Utilizing this supplement can prevent common nutrient deficiencies and support optimal plant health across different hydroponic setups or soil gardens. -
Question:
Can I use this supplement in a hydroponic system?
Answer: Absolutely! Humboldts Secret Calcium, Magnesium, and Iron Supplement is specifically formulated for hydroponic systems. The liquid nutrient format allows for better absorption by the plants, making it particularly effective in soilless setups. When combined with your primary nutrient solution, this supplement can help boost plant vitality, ensuring both strong vegetative growth and prolific flowering. -
Question:
What should I do if my plants show signs of nutrient deficiency?
Answer: If your plants exhibit signs of nutrient deficiency, such as yellowing leaves or poor growth, incorporating Humboldts Secret Calcium, Magnesium, and Iron Supplement into your regime can provide the essentials they need to recover. Start by identifying the specific deficiency and adjust your nutrient solution accordingly, adding this supplement to alleviate issues related to calcium, magnesium, or iron. Monitoring plant responses after application can guide further adjustments for optimal health. -
Question:
How does this supplement compare to traditional fertilizers?
Answer: Humboldts Secret Calcium, Magnesium, and Iron Supplement offers a concentrated formulation that is specifically blended for immediate availability to plants, unlike many traditional fertilizers which often release nutrients more slowly. This rapid nutrient uptake can lead to quicker responses from plants. When used correctly, this supplement can enhance efficiency in nutrient delivery, making it a competitive choice for hydroponics and enhanced soil gardening. -
Question:
Can this supplement be mixed with other liquid nutrients?
Answer: Yes, you can mix Humboldts Secret Calcium, Magnesium, and Iron Supplement with other liquid nutrients as part of your comprehensive feeding schedule. However, it is important to follow a specific ratio and be cautious of using too many different formulations simultaneously, as this can lead to nutrient lockout. Mixing it effectively allows for a well-rounded nutrient profile that supports plant health during critical growth stages. -
Question:
What is the shelf life of this supplement?
Answer: Humboldts Secret Calcium, Magnesium, and Iron Supplement typically has a long shelf life when stored in a cool, dark place. Ensuring the cap is tightly closed helps maintain its efficacy. Therefore, it’s advisable to use it within the recommended time frame stated on the label to guarantee maximum effectiveness at the time of application, avoiding any potential degradation of the nutrient quality. -
Question:
How often should I apply this supplement to my plants?
Answer: The frequency of application for Humboldts Secret Calcium, Magnesium, and Iron Supplement will depend largely on the specific needs of your plants and growing conditions. Generally, it is recommended to add it to your nutrient solution every few weeks throughout the vegetative and flowering phases. This regular feeding schedule helps prevent deficiencies and supports robust plant growth, ensuring your plants thrive during their life cycle. -
Question:
Where can I buy Humboldts Secret Calcium, Magnesium, and Iron Supplement in Australia?
Answer: You can purchase Humboldts Secret Calcium, Magnesium, and Iron Supplement at Ubuy in Australia. Ubuy offers a convenient online shopping experience, allowing you to search for this hydroponic nutrient solution along with other gardening supplies. Their platform ensures that you can access quality products suitable for your hydroponics setup right from the comfort of your home.
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“Promt delivery. Seems like a good product.”
22 July 2026 · via Trustpilot
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“Very impressed with the speed at which I received my package from the United States to Australia. Highly recommended.”
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“Very efficient service. Hassle-free. Excellent product. Have ordered several times.”
17-Jul-26 · via Trustpilot
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AUD 95
Order now and get it around Tuesday, August 11
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Features & Benefits
- Source of calcium, magnesium, and chelated iron
- Corrects common plant deficiencies
- Supports nutrient uptake and absorption
- Suitable for hydroponics, soil, and container gardens
- Optimal for coco coir medium and reverse osmosis water
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