Humboldts Secret Calcium, Magnesium and Iron Supplement – Hydroponic Supplies – Liquid Nutrient Fertilizer – Supports Vegetative and Flowering Stage – 1 Quart

It gave me good harvests

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 won’t be my last. Going to keep getting this product to keep my flowers healthy looking.

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.

I do a garden outside and hydroponic inside in the winter. This product works very well for both. My plants are healthy and productive. It will continue to be in my garden arsenal.

I have always and a problem with blossom end rot. No matter what I did it always showed up. I started using thus product just after seeing the first tomato start to set. I used 1/8 cup per plant every week for six weeks. Not only no end rot but a record tomato set, well over 40# from five Rome plants. No will use this every year. I will also try on a couple pepper plants to see if it helps them also.