Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.
🌱 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 rapid absorption and versatile use across soil, hydroponics, coco coir, and RO water systems, it strengthens plant structure, enhances photosynthesis, and prevents common nutrient deficiencies—ensuring vigorous growth, vibrant foliage, and abundant fruiting for both indoor and outdoor gardens.
| ASIN | B01GB23TD0 |
| Application Method | soil drench or foliar spray |
| Best Sellers Rank | #25,301 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #589 in Garden Fertilizers |
| Brand | Humboldts Secret |
| Brand Name | Humboldts Secret |
| Coverage | Medium |
| Customer Reviews | 4.6 out of 5 stars 2,094 Reviews |
| 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 |
J**7
This stuff WORKS!!
This stuff is great! My pepper plants were turning yellow and had blossom end rot so they were getting a lottlw rotten hole before they were even ready to pick. I read online that several ppl recommended this for that problem. It was like a miracle, I used it twice and my plants turned green again and the peppers started growing perfectly! I kept using them as recommended and got so many beautiful peppers from my plant all summer! Life saver! Plus it is so concentrated, you only use about a cap full with a gallon of water so it will last FOREVER!
N**P
Please help me with my light , my Tatu 1000W LED Grow Light
Like
G**A
Works wonders
Works wonders on all plants even the cactus plants the size was perfect but I will be looking for larger size for all my other plants
J**.
Brought my plants back to life
It helped with yellowing and brought my plants back to life
K**O
Quickly shows improvement to my house plants. Good company
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.
H**O
Plants
Good cuality
A**M
It works!
Worked just as promised. Got rid of the yellowing caused by chlorosis and the leaves on my grapevine are green and healthy again! Took only 2 days to see significant results! Thank you!!!
M**Y
Bad delivery experience
I’m sure works great I just ordered their entire line of products, but unfortunately a good amount was spilled by the time it was delivered. I don’t know if it just doesn’t get sealed right or if these guys are driving the Superman. This stuff is expensive for it to be delivered with a good amount gone! I initially had just base a and base b with the sweet and sticky additive, then my plants started looking a little sick so I’m glad the calmag is here. Will still give 3 stars just to give the benefit of a doubt and will update soon
Trustpilot
1 month ago
1 week ago