--- product_id: 369723702 title: "Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz)" brand: "bloom city" price: "¥3798" currency: JPY in_stock: false reviews_count: 5 url: https://www.desertcart.jp/products/369723702-bloom-city-professional-grade-ultra-pure-cal-mag-growing-supplement store_origin: JP region: Japan --- # Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) **Brand:** bloom city **Price:** ¥3798 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) by bloom city - **How much does it cost?** ¥3798 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/369723702-bloom-city-professional-grade-ultra-pure-cal-mag-growing-supplement) ## Best For - bloom city enthusiasts ## Why This Product - Trusted bloom city brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) : desertcart.in: Garden & Outdoors Review: Great product! - Did wonders for my plants! Will definitely purchase again. Review: Best plant fertilizer - I’ve been using the Bloom City Professional Grade Ultra Pure Cal-Mag (32 oz) for my plants, and I’m very impressed with the results. It’s made a noticeable difference in overall plant health—especially with preventing calcium and magnesium deficiencies that can show up as yellowing leaves or weak growth. The formula is clean and easy to mix, and a little goes a long way. I’ve used it with both soil and hydro setups, and it works great across the board. My plants look greener, stronger, and more vibrant since adding this to my routine. Another big plus is that it doesn’t cause buildup or clogging in my system, which I’ve had issues with in the past when using other brands. If you’re growing vegetables, houseplants, or anything that needs that extra nutrient boost, this is definitely worth trying. Reliable quality and consistent results. I'll be buying again! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B073ZNQWCM | | Brand | Bloom City | | Brand Name | Bloom City | | Coverage | Full | | Customer Reviews | 4.7 out of 5 stars 4,988 Reviews | | Item Form | Powder | | Item Weight | 32 Ounces | | Liquid Volume | 32 Fluid Ounces | | Part Number | BCALMAG1Q | | Specific Uses For Product | organic | | Target Species | plants | | UPC | 841401125141 | ## Product Details - **Brand:** Bloom City - **Item Weight:** 32 Ounces - **Item Form:** Powder - **Liquid Volume:** 32 Fluid Ounces - **Specific Uses For Product:** organic ## Images ![Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) - Image 1](https://m.media-amazon.com/images/I/71w95RGYnrL.jpg) ![Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) - Image 2](https://m.media-amazon.com/images/I/819b51Y6x6L.jpg) ![Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) - Image 3](https://m.media-amazon.com/images/I/81FASSzoi9L.jpg) ![Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) - Image 4](https://m.media-amazon.com/images/I/816+CxuUnIL.jpg) ![Bloom City Professional Grade Ultra Pure Cal-Mag Growing Supplement Quart (32 oz) - Image 5](https://m.media-amazon.com/images/I/812lYWScaDL.jpg) ## Questions & Answers **Q: Is there nitrogen in this? It would be helpful for the seller to post the bottle back side label.** A: Hey there, good idea on posting the labels, adding that to my to-do list! To answer your question, yes there is Nitrogen. Here is the guaranteed analysis of nutrient content on our Cal-Mag. Total Nitrogen 2%, 2% Nitrate Nitrogen, Calcium 2%, Magnesium 0.6%, Boron .002%, Copper .003%, iron .004%, Manganese .004%, Zinc .004%. Derived from: Calcium Nitrate, Magnesium Nitrate, Boric Acid, Copper Sulfate, Ferric Sulfate, Manganese Sulfate, Zinc Sulfate. Hope that helps! James - Bloom City Crew **Q: Site says it is compatible with all growth mediums, but bottle says for hydroponic use ONLY. Which is it?** A: That terminology on the bottle is unfortunately a labeling requirement placed on us by regulators. It is compatible with all growing mediums, including soil, cocoa coir, peat, hydroponic systems, etc. Thanks, James - Bloom City Crew **Q: Can this be mixed with epsom salt for additional magnesium as a foliar spray or added as a root drench?** A: Hi, Great question. It can be added to epsom salt in a water solution, however we suggest you try this Cal-Mag first on the plants - its probably more than enough magnesium. We use highly bio-available mineral forms and add organic acids to the product to increase uptake. Its also great as both a foliar spray and a root drench! Let us know how the plants grow! **Q: What would be the salt in ppm per dose added to ro or distilled water?** A: Hi, thanks for the question! The PPM added would be about 120 for the low dose of 2ml per gallon, and 240 for the high dose of 4ml per gallon. Let us know if you have any other questions! James - Bloom City Crew ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product! *by D***T on 4 August 2026* Did wonders for my plants! Will definitely purchase again. ### ⭐⭐⭐⭐⭐ Best plant fertilizer *by J***W on 26 March 2026* I’ve been using the Bloom City Professional Grade Ultra Pure Cal-Mag (32 oz) for my plants, and I’m very impressed with the results. It’s made a noticeable difference in overall plant health—especially with preventing calcium and magnesium deficiencies that can show up as yellowing leaves or weak growth. The formula is clean and easy to mix, and a little goes a long way. I’ve used it with both soil and hydro setups, and it works great across the board. My plants look greener, stronger, and more vibrant since adding this to my routine. Another big plus is that it doesn’t cause buildup or clogging in my system, which I’ve had issues with in the past when using other brands. If you’re growing vegetables, houseplants, or anything that needs that extra nutrient boost, this is definitely worth trying. Reliable quality and consistent results. I'll be buying again! ### ⭐⭐⭐⭐⭐ Great product will buy again *by L***I on 15 July 2026* This took care of blossom end rot on my tomatoes really quickly, I will be using this every year, hurray…big beautiful tomatoes! ## Frequently Bought Together - Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer, Quart (32 oz) - Bloom City Organic Liquid Seaweed and Kelp Fertilizer Supplement, Quart (32 oz) Concentrated Makes 180 Gallons - Bloom City Liquid Silica Boost Fertilizer and Supplement, 1/2 Pint (8 oz) Concentrated Makes 45 Gallons --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/369723702-bloom-city-professional-grade-ultra-pure-cal-mag-growing-supplement](https://www.desertcart.jp/products/369723702-bloom-city-professional-grade-ultra-pure-cal-mag-growing-supplement) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-08*