{"product_id":"coomatec-12-pack-large-air-stones-4x2-in-cylinder-diffusers-for-aquarium-hydroponics-koi-ponds","title":"COOMATEC 12-Pack Large Air Stones — 4x2 in Cylinder Diffusers for Aquarium, Hydroponics \u0026 Koi Ponds","description":"\u003ch2\u003eReliable diffusion for aquatic tanks, ponds, and growing systems\u003c\/h2\u003e\n\u003cp\u003eCOOMATEC delivers a 12-pack of large air stones that create consistent bubble streams across water or nutrient solutions. Each cylinder diffuser measures 2 inches in diameter and 4 inches tall, designed to sink and rest on the tank bottom for steady bubble release. With a weight around 0.66 lbs per stone, these diffusers stay in place as you tune your setup, helping you achieve even diffusion without constant repositioning. Constructed from washable silicon carbide, the stones offer durability while remaining safe for aquatic life. Before first use, soak the stones completely in water for about two hours to optimize performance, and refresh with a gentle brush as buildup develops over weeks or months.\u003c\/p\u003e\n\u003ch3\u003eKey setup and compatibility details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStable sinking design (2\" D x 4\" H) helps form uniform bubbles across the substrate.\u003c\/li\u003e\n  \u003cli\u003eFits standard airline tubing of 3\/16 inch diameter for easy replacement and upgrades.\u003c\/li\u003e\n  \u003cli\u003eFor best diffusion, pair with a high-output air pump (at least 10W or equivalent). More power can increase bubble activity.\u003c\/li\u003e\n  \u003cli\u003eDurable and safe: silicone carbide material is washable and designed to work with aquatic environments.\u003c\/li\u003e\n  \u003cli\u003eWidely applicable to hydroponic systems, koi ponds, aquariums, and other setups that use air-driven diffusion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDurability, care, and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSoak the stones for 2 hours before initial use to remove dust and improve flow.\u003c\/li\u003e\n  \u003cli\u003eRinse and clean regularly with a soft brush to prevent clogging and maintain airflow.\u003c\/li\u003e\n  \u003cli\u003eRegular inspection helps ensure consistent performance and extend the life of your diffusers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVersatility and value\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOne pack provides multiple stones for multi-tank setups or larger displays.\u003c\/li\u003e\n  \u003cli\u003eSuitable for homes, classrooms, or small commercial systems that rely on effective aeration.\u003c\/li\u003e\n  \u003cli\u003eSilicon carbide construction balances durability with safe operation in aquatic environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn real-world use, these air stones can support steady aeration in tanks, promote healthy root zones in hydroponics, and offer reliable diffusion for koi ponds. While results vary by setup, the 12-pack design gives you options to tailor diffusion intensity and coverage without guessing when to replace components.\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 are the air stones and what tubing do I need?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Each stone is 2 inches in diameter and 4 inches tall; uses standard 3\/16 inch airline tubing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I care for these air stones to keep them performing well?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Soak for 2 hours before first use; clean regularly with a brush to prevent clogging; replace as needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COOMATEC","offers":[{"title":"Default Title","offer_id":40564539719809,"sku":"B0BM3HWFKB","price":91.8,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4757\/3633\/files\/coomatec-large-air-stones-4x2-inch-cylinder-diffuser-aquarium.jpg?v=1765933504","url":"https:\/\/petiva.ca\/products\/coomatec-12-pack-large-air-stones-4x2-in-cylinder-diffusers-for-aquarium-hydroponics-koi-ponds","provider":"Petiva","version":"1.0","type":"link"}