--- product_id: 85751916 title: "BioGuard Back Up 2 Algae Preventative, 1 Quart, Single Pack" brand: "bioguard" price: "¥14398" currency: JPY in_stock: true category: "Bio Guard" url: https://www.desertcart.jp/products/85751916-bioguard-back-up-2-algae-preventative-1-quart-single-pack store_origin: JP region: Japan --- # Powerful surfactant penetrates cracks Sunlight-stable formula Boosts activity as water heats BioGuard Back Up 2 Algae Preventative, 1 Quart, Single Pack **Brand:** bioguard **Price:** ¥14398 **Availability:** ✅ In Stock ## Summary > 🌊 Stay ahead of algae—because your pool deserves the VIP treatment. ## Quick Answers - **What is this?** BioGuard Back Up 2 Algae Preventative, 1 Quart, Single Pack by bioguard - **How much does it cost?** ¥14398 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/85751916-bioguard-back-up-2-algae-preventative-1-quart-single-pack) ## Best For - bioguard enthusiasts ## Why This Product - Trusted bioguard brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Temperature-Activated Power:** Formula intensifies as water temperature rises—perfect for peak swimming seasons. - • **Sunlight-Stable & Long-Lasting:** Won't evaporate or degrade under the sun, ensuring consistent protection when you need it most. - • **Algae Defense That Works Before It Starts:** Prevents a wide variety of algae with weekly use, keeping your pool pristine and swim-ready. - • **Deep Penetration with Advanced Surfactants:** Targets algae in tiny cracks and crevices where others can’t reach, without altering pH levels. - • **Seamless Integration with BioGuard Systems:** Fits perfectly into your 3-Step or Once-A-Week BioGuard Care routine for effortless pool maintenance. ## Overview BioGuard Back Up 2 Algae Preventative is a 1-quart liquid algaecide designed to prevent a broad spectrum of algae growth. Its sunlight-stable, non-staining formula intensifies with rising water temperatures and features a powerful wetting agent that penetrates hard-to-reach areas without affecting pH. Compatible with BioGuard’s 3-Step Care System, it offers reliable, easy-to-use protection for maintaining crystal-clear pools. ## Description BioGuard Back Up Algaecide is BioGuard's most effective algae preventative. The highly effective formula prevents wide variety of algae growth. It's stable in sunlight and will not evaporate. The activity of this product increases as water temperature rises, which is when you need protection the most. Back Up has a powerful surfactant/wetting agent, which makes it able to work in the tiny cracks and crevices where algae starts. This product will not affect pH levels and is non-staining. ## Features - Highly Effective Algae Preventative: Our non-staining highly effective formula prevents a wide variety of algae growth. Weekly use of Back Up 2 prevents before it starts. It's stable in sunlight and will not evaporate. The activity of this product increases as water temperature rises, which is when you need protection the most. - Powerful Wetting Agent: Our Back Up 2 has a powerful surfactant agent, which makes it able to work in the tiny cracks and crevices where algae starts. It does not affect pH levels. - Add this product directly to the pool by pouring around the outside perimeter of the pool while filter and pump are in operation. This product is not recommended for use in pools that feature attached spas or intricate water features. - Compatible with the 3-Step BioGuard Care System: This product seamlessly integrates with either the 3-Step or Once-A-Week 3-Step BioGuard Care System, offering flexibility and convenience for pool owners. The addition of algicide is needed for proper pool maintenance. - Tested and Proven Effective: BioGuard products are known for delivering reliable results and making pool care easy. BioGuard carries an extensive line of pool solutions for all needs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N1FBFZL | | Best Sellers Rank | #14,241 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #30 in Swimming Pool Algaecides | | Brand Name | BioGuard | | Customer Reviews | 4.8 4.8 out of 5 stars (554) | | Item Form | Liquid | | Item Type Name | Pool & Spa Supplies | | Item Weight | 2 pounds | | Manufacturer | BioGuard | | Manufacturer Part Number | BIO23050 | | Model Number | BIO23050 | | Number of Items | 1 | | Number of Packs | 1 | | Package Size Name | 1 Quart | | Product Benefits | Controls Algae | | UPC | 017541000581 017541262668 017541652469 | | Unit Count | 32 Fluid Ounces | ## Product Details - **Brand:** BioGuard - **Item Form:** Liquid - **Item Weight:** 2 pounds - **Product Benefits:** Controls Algae - **UPC:** 017541000581 017541262668 017541652469 ## Images ![BioGuard Back Up 2 Algae Preventative, 1 Quart, Single Pack - Image 1](https://m.media-amazon.com/images/I/51zNgMNV2BL.jpg) ![BioGuard Back Up 2 Algae Preventative, 1 Quart, Single Pack - Image 2](https://m.media-amazon.com/images/I/41758tpCLaL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - BioGuard Back Up 2-1 Quart, Single, Proven Effective Algae Preventative, Non-Staining, Keeps Water Clean and Clear - BioGuard Pool Complete Weekly 3L, 3-in-1 High-Intensity Clarifier & Cleaner, Prevents Waterline Buildup, Removes Phosphates, Keeps Water Clear --- ## 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/85751916-bioguard-back-up-2-algae-preventative-1-quart-single-pack](https://www.desertcart.jp/products/85751916-bioguard-back-up-2-algae-preventative-1-quart-single-pack) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-21*