--- product_id: 14964367 title: "Copper Sulfate Pentahydrate - Crystals - 25.2% Cu - 5 Pounds" brand: "alpha chemicals" price: "359.55 DT" currency: TND in_stock: true reviews_count: 8 category: "Alpha Chemicals" url: https://www.desertcart.tn/products/14964367-copper-sulfate-pentahydrate-crystals-25-2-cu-5-pounds store_origin: TN region: Tunisia --- # 5H2O 25.2% Cu Crystal Form Copper Sulfate Pentahydrate - Crystals - 25.2% Cu - 5 Pounds **Brand:** alpha chemicals **Price:** 359.55 DT **Availability:** ✅ In Stock ## Summary > ✨ Elevate Your Experiments with Copper Magic! ✨ ## Quick Answers - **What is this?** Copper Sulfate Pentahydrate - Crystals - 25.2% Cu - 5 Pounds by alpha chemicals - **How much does it cost?** 359.55 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/14964367-copper-sulfate-pentahydrate-crystals-25-2-cu-5-pounds) ## Best For - alpha chemicals enthusiasts ## Why This Product - Trusted alpha chemicals brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **High Purity:** Experience the quality with 25.2% copper content. - • **Easy to Handle:** Crystals are manageable for all skill levels. - • **Bulk Availability:** Ideal for schools, labs, and hobbyists alike. - • **Versatile Applications:** Use it for gardening, chemistry, and more! - • **Unlock Your Inner Scientist:** Perfect for crystal growing and experimental fun! ## Overview Copper Sulfate Pentahydrate is a high-purity chemical compound featuring 25.2% copper content, available in a convenient 5-pound bulk package. Ideal for crystal growing and a variety of scientific experiments, this versatile product is perfect for educational institutions, laboratories, and DIY enthusiasts. ## Description Shipped in a resealable bag that is sealed for safety and freshness. It includes a tear-off tab for easy opening. Review: Good stuff! - Gets rid of that moss just fine. Will buy more of the same when I am ready. Review: Very effective. - This is for Copper Sulfate Pentahydrate Crystals Same day results, and better next day after good brushing and washing filter. No foaming as with other liquid I tried first, also from desertcart. But when I came across this product, I knew it would work well, as I had seen a pool tech guy using this in my pool last year when I had green water in my old pool, which has several palms around it and other vegetation. I used the teaspoon for each 1,000 gal of water doses that another reviewer posted in his review. Is good to have something affordable and effective on hand, and can't wait until I can afford to refinish the pool, which is really necessary in my case. ## Features - Chemical Structure - CuSO4*5H2O - Crystal Form (see second picture) - Great for crystal growing and other experiments - We sell bulk for so many different uses, we don't include any specific use instructions ## Technical Specifications | Specification | Value | |---------------|-------| | % Assay of Chemical(s) | 25.2 | | ASIN | B00KDH7G8O | | Best Sellers Rank | #237,359 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3,659 in Garden Fertilizers | | Brand | Alpha Chemicals | | Brand Name | Alpha Chemicals | | Customer Reviews | 4.6 out of 5 stars 272 Reviews | | Item Form | Crystal | | Item Volume | 5 Liters | | Item Weight | 5 Pounds | | Manufacturer | Alpha Chemicals | | Percentage assay | 25.2 | | UPC | 725410979233 | | Unit Count | 80.0 Fluid Ounces | | Volume | 5 Liters | ## Product Details - **Brand:** Alpha Chemicals - **Item Weight:** 5 Pounds - **Item Volume:** 5 Liters - **Percentage assay:** 25.2 - **Item Form:** Crystal ## Images ![Copper Sulfate Pentahydrate - Crystals - 25.2% Cu - 5 Pounds - Image 1](https://m.media-amazon.com/images/I/41d+tFjIE8L.jpg) ![Copper Sulfate Pentahydrate - Crystals - 25.2% Cu - 5 Pounds - Image 2](https://m.media-amazon.com/images/I/71pc+NOoKoL.jpg) ## Questions & Answers **Q: Can I use this to make a Bordeaux mixture?** A: Hi - not sure about the Bordeaux mixture but I can confirm the granules dissolve fairly easily. I’ve been using this in a fountain and small pool to control algae growth. It has a blue color. Hope this helps! **Q: I want to sprinkle it around my dock to kill the hydrillas. Will the crystals sink?** A: No! This is a very bad idea. Copper sulfate can be toxic to fish and other organisms. Copper sulfate results in copper build up in pond sediments and creates a sterile bottom in the pond. Besides many important organisms, it kills beneficial bacteria. Studies with several aquatic species have found copper to be highly to very highly toxic to fish and aquatic life. Trout, koi and juvenile fish of several species are known to be particularly sensitive to copper. Fish kills have been reported after copper sulfate applications for algae control in ponds and lakes. You could be cited for criminal vandalism and hurting wildlife if you use this in a public pond or stream. Please do not kill fish and all life in the pond with this highly toxic product. It is harmless to humans but very toxic to fish. Just dig out the offending plant or get fish that will eat it - as long as its a native fish to the pond. Don't mess with nature, please! **Q: is this product used to kill a tree stump ?** A: I have used this product to kill the roots of a tree that was causing issues by blocking an area of the drain. **Q: can this product be used with a drain foaming agent ?** A: RE: Cupric Sulfate-Pentahydrate: I have never used this product for any other reason than to treat (kill) tree roots in my septic pipes. By itself it does not foam but my understanding that used with foaming sewer line cleaners, it augments/enhances the foaming-cleaning action of such products of which there are many different formulations. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good stuff! *by S***X on January 29, 2026* Gets rid of that moss just fine. Will buy more of the same when I am ready. ### ⭐⭐⭐⭐⭐ Very effective. *by M***G on May 30, 2021* This is for Copper Sulfate Pentahydrate Crystals Same day results, and better next day after good brushing and washing filter. No foaming as with other liquid I tried first, also from amazon. But when I came across this product, I knew it would work well, as I had seen a pool tech guy using this in my pool last year when I had green water in my old pool, which has several palms around it and other vegetation. I used the teaspoon for each 1,000 gal of water doses that another reviewer posted in his review. Is good to have something affordable and effective on hand, and can't wait until I can afford to refinish the pool, which is really necessary in my case. ### ⭐⭐⭐⭐⭐ POOL GREEN ALGAE GONE *by F***R on October 15, 2021* Why did it take me this long to come across this product? Have purchased algaeside products forever, bought shock, blue shock, but the ingredient is what's in these crystals. This is practically pennies compared to the packaged stuff and the pool service's product. Just let the pool company I will no longer need their services. We got a bunch of heavy rains here in Florida, and this was THE perfect test. Passed with flying colors. I am so thankful for this knowledge of this product and that it is cheaply priced. ## Frequently Bought Together - Copper Sulfate Pentahydrate - Crystals - 25.2% Cu - 5 Pounds - Zinc Sulfate Monohydrate - 35.5% Zn - 99% Pure - 1 Pound - Ferrous Sulfate Heptahydrate - FeSO4*7H2O - 20% Iron - Very Soluble - 5 Pounds --- ## 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.tn/products/14964367-copper-sulfate-pentahydrate-crystals-25-2-cu-5-pounds](https://www.desertcart.tn/products/14964367-copper-sulfate-pentahydrate-crystals-25-2-cu-5-pounds) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-03*