--- product_id: 206073249 title: "Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe for Livestock, Wildlife and Irrigation" brand: "sepro" price: "£88.43" currency: GBP in_stock: true reviews_count: 8 category: "Se Pro" url: https://www.desertcart.co.uk/products/206073249-captain-liquid-copper-algaecide-1-gallon-epa-approved-algae-control store_origin: GB region: United Kingdom --- # Fast-acting algae control Targets all algae types EPA-approved & safe Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe for Livestock, Wildlife and Irrigation **Brand:** sepro **Price:** £88.43 **Availability:** ✅ In Stock ## Summary > 🌊 Clear waters, zero compromises—Captain Liquid Copper conquers algae fast! ## Quick Answers - **What is this?** Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe for Livestock, Wildlife and Irrigation by sepro - **How much does it cost?** £88.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/206073249-captain-liquid-copper-algaecide-1-gallon-epa-approved-algae-control) ## Best For - sepro enthusiasts ## Why This Product - Trusted sepro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Safe Formula:** EPA-approved and safe for livestock, wildlife, and irrigation—protect your ecosystem while you clear your waters. - • **Trusted by Experts:** Used by professionals nationwide to maintain pristine lakes, ponds, and reservoirs—join the elite water care community. - • **Effortless Application:** Simple spray-on treatment for both large-scale and spot applications—no fuss, just results. - • **Rapid Algae Eradication:** See visible algae reduction in just 1-2 days—because waiting is so last season. - • **All-Inclusive Algae Targeting:** Effectively eliminates planktonic, filamentous, and chara algae for crystal-clear water clarity. ## Overview Captain Liquid Copper Algaecide is a 1-gallon, EPA-approved, fast-acting algae control solution designed for lakes, ponds, and reservoirs. It targets all major algae types including planktonic, filamentous, and chara, delivering visible results within 1-2 days. Safe for livestock, wildlife, and irrigation, this expert-trusted spray offers an easy application method to maintain crystal-clear water without restrictions on fishing, swimming, or drinking. ## Description Buy Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe for Livestock, Wildlife and Irrigation: Water Treatment - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Works great!! - Why did you pick this product vs others?: Used the product on Wednesday and again on Friday diluting 32oz to 2.5 gallons water. All the algae was gone by Sunday so extremely satisfied. The ducks were swimming in the pond less than 12 hours after I sprayed and they as well as fish are all fine. The dog was swimming Saturday and he is fine. One thing to note, do not under any circumstances let your wife read the information on the label attached to the container as she will associate this product with a nuclear explosion. Review: It worked - It worked over several applications. Algae was bad so it took several applications.. ## Features - Captain targets all major algae types-planktonic, filamentous, and chara-for total water clarity and balance in lakes, ponds, and reservoirs - Fast-Acting Algae Solution Used by Experts: Can see reduction in algae growth within 1-2 days - EPA approved with No restrictions on fishing, drinking, swimming, or irrigation. Safe for wildlife and livestock. Avoid use in waterbodies with copper-sensitive fish like koi or trout - Simple Spray Application just use on targeted areas using a sprayer. Great for both large-scale and spot treatments - Due to compliance with state regulations, shipments to AK, CT, HI, ME, NJ, NY, VT, WA, and Canada are not permitted. Orders from these states will be voided ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0018Q3SC2 | | ASIN | B0018Q3SC2 | | Best Sellers Rank | #297,525 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #477 in Water Garden & Pond Treatment | | Brand Name | SePRO | | Customer Reviews | 4.4 4.4 out of 5 stars (63) | | Date First Available | October 16, 2008 | | Date First Available | October 16, 2008 | | Directions | Combine 32 ounces of Captain with 2.5 gallons of water and spray on top of the algae until it turns dark blue. Only apply to a maximum of 1/3 the total surface acreage at a time. | | Item Dimensions LxWxH | 13 x 9 x 11 inches | | Item Package Dimensions L x W x H | 13 x 11 x 9 inches | | Item Weight | 10.5 Pounds | | Item model number | cap001 | | Item model number | cap001 | | Manufacturer | SePRO Corporation | | Manufacturer | SePRO Corporation | | Material | Other | | Product Dimensions | 13 x 9 x 11 inches; 10.5 Pounds | | Size | 1 Gallon | | Target Audience Keyword | All forms of algae (Planktonic, Filamentous, and Chara) | ## Product Details - **Brand:** SePRO - **Item Form:** Liquid - **Item Weight:** 10.5 Pounds - **Liquid Volume:** 1 Gallons - **Manufacturer:** SePRO Corporation ## Images ![Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe for Livestock, Wildlife and Irrigation - Image 1](https://m.media-amazon.com/images/I/719LsfuKI9L.jpg) ## Questions & Answers **Q: How many gallons is this?** A: 1 gallon **Q: how long in between doses** A: Depends on how concentrated the algae blooms occur. For me, I had to dose about every 12 to 18 days. **Q: okay for fish and aquatic life?** A: yes, but use sparingly too much will remove some oxygen from the water ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great!! *by S***S on July 8, 2025* Why did you pick this product vs others?: Used the product on Wednesday and again on Friday diluting 32oz to 2.5 gallons water. All the algae was gone by Sunday so extremely satisfied. The ducks were swimming in the pond less than 12 hours after I sprayed and they as well as fish are all fine. The dog was swimming Saturday and he is fine. One thing to note, do not under any circumstances let your wife read the information on the label attached to the container as she will associate this product with a nuclear explosion. ### ⭐⭐⭐⭐⭐ It worked *by B***N on February 25, 2024* It worked over several applications. Algae was bad so it took several applications.. ### ⭐⭐⭐⭐ Great product *by D***R on November 18, 2024* This product has done exactly what I needed it to do, I will re-order again, but get the captain XR next time ## Frequently Bought Together - Captain Liquid Copper Algaecide - 1 Gallon Professional-Grade Algae Killer for Lakes & Ponds, EPA Approved to Control All Types of Algae (Planktonic, Filamentous, and Chara) - Airmax Pond Dye Packets Nature's Blue Colorant for Large Pond & Lake, Beneficial UV Blocking Color Concentrate, Maintain Clean & Clear Water, Fish Safe, Easy Treatment, 2 Soluble Packets - Sonar RTU (Ready-to-Use) Aquatic Herbicide - 1 Quart Systemic Herbicide for Duckweed, Hydrilla and Most Difficult Aquatic Weeds, No Equipment Needed, Simply Pour in for Season Long Control --- ## 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.co.uk/products/206073249-captain-liquid-copper-algaecide-1-gallon-epa-approved-algae-control](https://www.desertcart.co.uk/products/206073249-captain-liquid-copper-algaecide-1-gallon-epa-approved-algae-control) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*