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🌱 Unlock your garden’s secret weapon for unstoppable growth!
Humboldts Secret CalMag & Iron is a premium 1-gallon liquid fertilizer delivering a balanced blend of calcium, magnesium, and chelated iron. Designed for fast absorption and versatile use across soil, hydroponics, coco coir, and RO water systems, it prevents nutrient deficiencies, strengthens plant structure, and enhances flowering and fruiting for healthier, more productive plants.
| ASIN | B01GB23TD0 |
| Application Method | soil drench or foliar spray |
| Best Sellers Rank | #21,549 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #616 in Garden Fertilizers |
| Brand Name | Humboldts Secret |
| Coverage | Medium |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,085) |
| Global Trade Identification Number | 00648260730406 |
| Item Form | Liquid |
| Item Highlight | Calcium, Magnesium & Chelated Iron Formula, Prevents Nutrient Deficiencies, For Soil, Coco, Hydroponics & RO Water, Easy Mix |
| Liquid Volume | 128 fluid ounces |
| Manufacturer | Humboldts Secret |
| Mixing Ratio | 2-5 ml/gallon |
| Model Number | CalMag & Iron |
| Number of Packs | 1 |
| Part Number | TUEEQE-06 |
| Specific Uses For Product | Hydroponic |
| Target Species | flowering plants |
| UPC | 648260730406 |
| Unit Count | 128 Fluid Ounces |
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