--- product_id: 1570460 title: "EcoBio-Block Aquarium Water Clarifier (Medium, 15–40 gal) | Volcanic Rock — Lasts Up to 2 Years — No Weekly Additives — Long-Term Water Balance — Safe for Fish, Shrimp, Frogs & Turtles" brand: "ecobio-block" price: "$79.81" currency: USD in_stock: true category: "Eco Bio Block" url: https://www.desertcart.us/products/1570460-ecobio-block-aquarium-water-clarifier-medium-15-40-gal-volcanic store_origin: US region: United States of America --- # Up to 2 years of maintenance-free water clarity Optimized for 15–40 gallon freshwater tanks Mineral-rich volcanic rock for active filtration EcoBio-Block Aquarium Water Clarifier (Medium, 15–40 gal) | Volcanic Rock — Lasts Up to 2 Years — No Weekly Additives — Long-Term Water Balance — Safe for Fish, Shrimp, Frogs & Turtles **Brand:** ecobio-block **Price:** $79.81 **Availability:** ✅ In Stock ## Summary > 🪨 Transform your tank with nature’s powerhouse—clarity that lasts, hassle-free! ## Quick Answers - **What is this?** EcoBio-Block Aquarium Water Clarifier (Medium, 15–40 gal) | Volcanic Rock — Lasts Up to 2 Years — No Weekly Additives — Long-Term Water Balance — Safe for Fish, Shrimp, Frogs & Turtles by ecobio-block - **How much does it cost?** $79.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/1570460-ecobio-block-aquarium-water-clarifier-medium-15-40-gal-volcanic) ## Best For - ecobio-block enthusiasts ## Why This Product - Trusted ecobio-block brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Aquatic Life Safe:** Perfectly safe for fish, shrimp, turtles, and frogs—ideal for new tanks or reducing water changes. - • **Fast Visible Results:** Notice clearer water in as little as 2 days, with full stabilization within 2–6 weeks. - • **Perfect Mid-Size Fit:** Designed for 15–40 gallon tanks, including community aquariums and home turtle habitats. - • **Set & Forget Convenience:** No weekly dosing or additives needed—just drop it in and enjoy up to 2 years of crystal-clear water. - • **Active Mineral Filtration:** Porous volcanic rock absorbs pollutants & stabilizes water chemistry, going beyond passive filter media. ## Overview EcoBio-Block Aquarium Water Clarifier is a mineral-rich volcanic rock block engineered to actively absorb pollutants and stabilize water chemistry in freshwater tanks from 15 to 40 gallons. It replaces weekly liquid treatments with a simple, maintenance-free solution lasting up to 2 years, delivering clearer water in as little as 2 days while being safe for all freshwater aquatic life. ## Description desertcart.com : EcoBio-Block Aquarium Water Clarifier (Medium, 15–40 gal) | Volcanic Rock — Lasts Up to 2 Years — No Weekly Additives — Long-Term Water Balance — Safe for Fish, Shrimp, Frogs & Turtles : Aquarium Cleaning Supplies : Pet Supplies ## Features - MORE THAN A ROCK, NOT JUST FILTER MEDIA — engineered with mineral-rich, porous natural volcanic rock, nutrients, and a neutralizing cement binder; the structure absorbs pollutants and stabilizes water chemistry, actively maintaining a stable, healthy tank environment rather than sitting passively like standard filter media - SKIP THE WEEKLY DOSING, LASTS UP TO 2 YEARS — one stone replaces liquid water treatments, clarifiers, and bottled additives for up to 2 years; no droppers, no measuring, no weekly schedule, no recurring costs — just drop it in and let your tank stabilize itself - SIMPLE 3-STEP SETUP, RESULTS IN 2–6 WEEKS — rinse in chlorine-free water, soak overnight in chlorine-free water, then place near your filter outlet or air stone so water circulates through it; most tanks show results in 2–6 weeks, some as fast as 2 days, with slightly cloudy water during the first week being normal as your tank settles in - SAFE FOR ALL FRESHWATER FISH & AQUATIC LIFE — safe for delicate fish, turtles, shrimp, and frogs; ideal for starting a new tank, clearing cloudy water, reducing water changes, and eliminating odors; check pH and standard water test parameters during the first few weeks as conditions settle, and do a partial water change if anything drifts too far - MEDIUM SIZE TREATS 15–40 GALLONS — fits standard 20-, 29-, and 40-gallon community aquariums, mid-size freshwater setups, and home turtle tanks; also available in Nano (0.8–1.5 gal), Nano 2-Pack, Mini (3–8 gal), Small (8–16 gal), and Medium 2-Pack; for heavily stocked tanks, poor starting conditions, or tanks near the upper end of the range, choose the next size up or add a second stone for faster, stronger results ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003SOTWLI | | ASIN | B003SOTWLI | | Allergen Information | Allergen-Free | | Best Sellers Rank | #9,715 in Pet Supplies ( See Top 100 in Pet Supplies ) #61 in Aquarium Water Treatments | | Brand Name | EcoBio-Block | | Customer Reviews | 4.2 4.2 out of 5 stars (4,239) | | Date First Available | June 17, 2010 | | Department | Conditioners & Additives | | Global Trade Identification Number | 00897819001058 | | Included Components | EcoBio-Stone M Coral | | Item Form | Brick | | Item Type Name | Natural Water Clarifier | | Item Weight | 13.6 ounces | | Item model number | EBSMC00105 | | Liquid Volume | 40 gallons | | Manufacturer | ONEdersave Products LLC | | Manufacturer | ONEdersave Products LLC | | Manufacturer Part Number | EBSMC00105 | | Model Number | EBSMC00105 | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Product Dimensions | 2.63 x 4.1 x 6.1 inches; 13.6 ounces | | Target Species | Fish | | UPC | 897819001058 | | Unit Count | 1 Count | | Warranty Description | 120 day satisfaction guarantee For returns purchased directly from ONEdersave Products. If purchased from other stores, please follow their return policies. | ## Product Details - **Brand:** EcoBio-Block - **Item Form:** Brick - **Item Weight:** 13.6 ounces - **Liquid Volume:** 40 gallons - **Number of Packs:** 1 ## Images ![EcoBio-Block Aquarium Water Clarifier (Medium, 15–40 gal) | Volcanic Rock — Lasts Up to 2 Years — No Weekly Additives — Long-Term Water Balance — Safe for Fish, Shrimp, Frogs & Turtles - Image 1](https://m.media-amazon.com/images/I/61XAjvVQT4L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Frequently Bought Together - EcoBio-Block Stone for Aquariums, Medium - Natural Water Clarifier and Odor Remover, Treats 15 to 40 Gallons - API ACCU-CLEAR Freshwater Aquarium Water Clarifier 8-Ounce Bottle - EcoBio-Block Stone for Aquariums, Small - Natural Water Clarifier and Odor Remover, Treats 8 to 16 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.us/products/1570460-ecobio-block-aquarium-water-clarifier-medium-15-40-gal-volcanic](https://www.desertcart.us/products/1570460-ecobio-block-aquarium-water-clarifier-medium-15-40-gal-volcanic) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-11*