--- product_id: 564394562 title: "CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens" brand: "blue planet nutrients" price: "€ 7.94" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.hr/products/564394562-calmag-pro-formula-2-lb-blue-planet-nutrients-soluble-calcium store_origin: HR region: Croatia --- # Calcium, Magnesium & Iron blend Compatible with hydroponic & soil 16 oz concentrated formula CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens **Brand:** blue planet nutrients **Price:** € 7.94 **Availability:** ❌ Out of Stock ## Summary > 🌿 Feed your plants like a pro, watch them thrive like never before! ## Quick Answers - **What is this?** CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens by blue planet nutrients - **How much does it cost?** € 7.94 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/564394562-calmag-pro-formula-2-lb-blue-planet-nutrients-soluble-calcium) ## Best For - blue planet nutrients enthusiasts ## Why This Product - Trusted blue planet nutrients brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Trusted Quality:** From Blue Planet Nutrients, a pro-grade brand since 2010 - β€’ **Deficiency Defense:** Prevents blossom end rot & leaf curl for flawless growth - β€’ **Universal Garden Ally:** Perfect for hydroponic, soil, aeroponic & soil-less media setups - β€’ **Effortless Application:** Just dissolve per gallon & feedβ€”simple soak option for coco coir too - β€’ **Power-Packed Nutrients:** Calcium, magnesium, iron & micro-nutrients fuel photosynthesis & nutrient transport ## Overview CalMag Pro Formula is a 16 oz concentrated supplement delivering essential calcium, magnesium, iron, and micro-nutrients to prevent common plant deficiencies such as blossom end rot and leaf curl. Compatible with all growing mediums including hydroponic, soil, and aeroponic, it supports vital plant functions like photosynthesis and nutrient transport. Easy to use and trusted by professionals since 2010, it ensures healthier, more vibrant plants across all garden types. ## Description CalMag Pro Formula is a powdered calcium, magnesium, iron, and micro-nutrient supplement formulated for all varieties of plants growing in almost any type of garden. This concentrated formula will help prevent and correct common issues seen in a variety of plants including vegetables, fruits, flowers, trees, shrubs, and so much more. This product helps increases cell division & plant tissue development, increases flower & fruit sets on your prized plants, increases water, nutrient, and carbon dioxide uptake, allows plants to mobilize essential elements needed for healthy growth, and increases growth rates & crop maturity for a bountiful harvest. Simply dissolve a small amount per gallon of water and water your plants! You never know when a deficiency may arise, be prepared with a jar of CalMag Pro Formula on your shelf. Use with a base nutrient such as BlueMax, Elite Series, or Farmer's Pride for complete plant nutrition. Helps Increase: Cell division and plant tissue development, Flower and fruit sets, Water nutrient and carbon dioxide uptake, Growth rates and crop maturity Helps Prevent: Blossom end rot, Leaf tip burn, Dry and withered flower & fruit sets, Interveinal chlorosis, Stunted growth rates, Upward leaf curl, Micro-nutrient deficiencies Blue Planet Nutrients Cal-Mag Pro Formula is formulated for use in hydroponic systems, coco-coir, all soil-less growing media, and in soil. ## Features - CORRECT & PREVENT DEFICIENCIES: Feed CalMag Pro Formula to your plants as needed to prevent and correct common deficiencies such as blossom end rot and upward leaf curl. - CALCIUM, MAGNESIUM, IRON & MICRO-NUTRIENT SUPPLEMENT: CalMag provides plants with calcium, magnesium, iron, and micro-nutrients which are key components in many plant functions such as photosynthesis and absorption & transport of nutrients within the plant, and are vital to the healthy development of all varieties of plants. - VERSATILE FORMULA: Can be fed to all varieties of plants growing in almost any type of garden such as hydroponic, soil, aeroponic, and all soil-less media! Blue Planet Nutrients CalMag Pro Formula can be used along with other garden fertilizers and supplements. - EASY TO USE: Simply dissolve a small amount of product per gallon of water and water your plants! CalMag Pro Formula can also be used as a soak for coco coir prior to use as a hydroponic growing medium. - BLUE PLANET NUTRIENTS: Trusted brand from Houston, TX providing high quality, professional grade garden fertilizers and supplements since 2010. ## Product Details - **Brand:** Blue Planet Nutrients - **Item Weight:** 2 Pounds - **Item Form:** Powder - **Coverage:** Medium - **Specific Uses For Product:** calcium, magnesium, iron, micro-nutrient supplement for plants ## Images ![CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens - Image 1](https://m.media-amazon.com/images/I/41Gg2s0SpgL.jpg) ![CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens - Image 2](https://m.media-amazon.com/images/I/81dQ3szzk4L.jpg) ![CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens - Image 3](https://m.media-amazon.com/images/I/61LpX5S68tL.jpg) ![CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens - Image 4](https://m.media-amazon.com/images/I/71XdyXJNWfL.jpg) ![CalMag Pro Formula (2 LB) Blue Planet Nutrients | Soluble Calcium Magnesium & Micro-Nutrient Supplement | Corrects & Prevents Nutrient Deficiencies in Plants | for All Plants & Gardens - Image 5](https://m.media-amazon.com/images/I/71hWOI2YRGL.jpg) ## Questions & Answers **Q: What are the percentages of N, Ca and Mg?** A: N = 8% Ca = 15% Mg = 6% **Q: How often should it be applied for tomatoes?** A: I use 2 scoops per gallon once a week -using the scoop included- Works great as a boost for growth. **Q: What are the percentages of N, Ca and Mg?** A: N = 8% Ca = 15% Mg = 6% **Q: Is this organic and how much does 8oz do?** A: This is not organic. It is recommended to use at a rate of 1 to 2 grams per gallon. So this means, depending on how strong a dose you go with, you should get between 113 to 227 gallons of ready to feed plant food. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Might be the best! *by H***8 on May 24, 2023* Water soluble, no sticky mess and absolutely works great. I may even try their other products based on this performance, good stuff. ### ⭐⭐⭐⭐⭐ The CalMag SuperMan would use!! *by T***R on October 5, 2018* Wish I could buy this locally because it's amazing and very gentle on the microbiology in soil. Fixed blossom end rot very quickly it's worth trying. I'm hooked and I should have bought 4 or 5 before they went up $5 on everything.*UPDATE 12/07 Been using for a few months now and I still endorse it even more a little goes a long way and no effect on living soil and microbes (small footprint). ### ⭐⭐⭐⭐⭐ Easy to apply *by D***C on December 22, 2023* Its always safe to just have some on hand. I just usually add it to the feed program. As always you can't go wrong with Blue Planet nutrients. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/564394562-calmag-pro-formula-2-lb-blue-planet-nutrients-soluble-calcium](https://www.desertcart.hr/products/564394562-calmag-pro-formula-2-lb-blue-planet-nutrients-soluble-calcium) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-17*