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๐ฟ Unlock your gardenโs secret weapon for unstoppable growth!
Humboldts Secret Calcium, Magnesium and Iron Supplement is a liquid nutrient fertilizer designed to correct micronutrient deficiencies and enhance nutrient uptake in plants. Ideal for hydroponic, soil, and container gardens, it supports both vegetative and flowering stages, especially in coco coir and reverse osmosis water setups, ensuring healthier, more vibrant plants and higher yields.


















| ASIN | B01GB23TEY |
| Brand Name | Humboldts Secret |
| Coverage | Medium |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,540) |
| Item Form | Liquid |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Humboldts Secret |
| Mixing Ratio | 1-2ml:1000ml for vegetative growth and 2-5ml:1000ml for flowering |
| Model Number | 15195521384514 |
| Number of Items | 1 |
| Part Number | TUEEQE-09 |
| Specific Uses For Product | Hydroponic |
| Target Species | Plants |
| UPC | 648260730390 |
| Unit Count | 32 Milliliters |
K**O
Had some confusing instructions but their customer service got back to me quickly and cleared confusion. The jug arrived with no leak, has no order and my house plants are happy to get the dose of this fertilizer, especially my old lemon tree which goes out in summer and come in for winter. I notice when plants are healthy not many bugs appear. as it takes very little per gallon of water, it's a good value for the price.
L**๏ฟฝ
Perfect!
A**R
Works like a charm
K**N
Secure package shipped quick arrived. Quick product was just what my plants needed! Thank yall much!
A**A
This has been great to get my hibiscus green again. They got real yellow so I started using this product and every week they are getting that dark green color in the leaves. The buds aren't breaking off like they were too. I also used it on my azaleas too since they had some yellowness on the leaves. This is my second buy and it wonโt be my last. Going to keep getting this product to keep my flowers healthy looking.
Trustpilot
4 days ago
2 weeks ago