{"product_id":"ecobio-block-natural-volcanic-rock-for-aquarium-clarity-balance-15-40-gal-medium","title":"EcoBio-Block Natural Volcanic Rock for Aquarium Clarity \u0026 Balance — 15–40 gal (Medium)","description":"\u003cp\u003eEcoBio-Block is more than a rock. It combines mineral-rich, porous volcanic rock with a neutral cement binder to actively interact with tank water, helping absorb pollutants and stabilize water chemistry. The result can be a cleaner, more balanced habitat for freshwater life without relying on constant dosing.\u003c\/p\u003e\n\u003ch3\u003eWhat makes EcoBio-Block different\u003c\/h3\u003e\n\u003cp\u003eDesigned for real tanks, EcoBio-Block works with your filtration to maximize water contact with the rock’s porous structure. The result is a steadier environment that supports stable parameters as aquatics settle into a new routine.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSkip weekly dosing and still maintain clearer water for up to 2 years\u003c\/li\u003e\n  \u003cli\u003eNo droppers or measuring required; drop it in and let the tank balance itself\u003c\/li\u003e\n  \u003cli\u003eThree-step setup to get started with minimal effort\u003c\/li\u003e\n  \u003cli\u003eSafe for a range of freshwater life including fish, turtles, shrimp, and frogs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use in your tank\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRinse the stone in chlorine-free water\u003c\/li\u003e\n  \u003cli\u003eSoak overnight in chlorine-free water to remove any loose particles\u003c\/li\u003e\n  \u003cli\u003ePlace near the filter outlet or an air stone so water can circulate through it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost tanks show visible results in 2–6 weeks, with some faster responses. Slight cloudiness in the first week is normal as the tank settles in.\u003c\/p\u003e\n\u003ch3\u003eSafety and compatibility\u003c\/h3\u003e\n\u003cp\u003eEcoBio-Block is designed to be safe for delicate freshwater life and is suitable for starting new tanks, clearing cloudy water, reducing water changes, and minimizing odors. Monitor pH and standard water test parameters during the first weeks as conditions stabilize, and perform a partial water change if anything drifts too far.\u003c\/p\u003e\n\u003ch3\u003eSizing and tank compatibility\u003c\/h3\u003e\n\u003cp\u003eThe Medium stone is designed for 15–40 gallon tanks, fitting standard 20-, 29-, and 40-gallon community setups. It’s also available in Nano, Nano 2-Pack, Mini, Small, and other configurations. For heavily stocked tanks or poorer starting conditions, consider the next size up or use two stones for faster, stronger results.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What size tanks is EcoBio-Block best suited for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Best for medium tanks around 15–40 gallons; fits standard 20-, 29-, and 40-gallon community setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does EcoBio-Block last and how is it used?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One stone can last up to two years; no weekly dosing or measuring is required—just follow setup steps and monitor water parameters.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EcoBio-Block","offers":[{"title":"Default Title","offer_id":57205540847993,"sku":"B003SOTWLI","price":39.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/8934\/1049\/files\/ecobio-block-natural-volcanic-rock-clarity.jpg?v=1777835858","url":"https:\/\/petlyvox.com\/products\/ecobio-block-natural-volcanic-rock-for-aquarium-clarity-balance-15-40-gal-medium","provider":"petlyvox","version":"1.0","type":"link"}