{"product_id":"aquarium-filter-media-hollow-balls-bio-filtration-koi-pond","title":"Aquarium Filter Media Hollow Balls 100\/200\/500G – Bio Filter","description":"\n\u003ch2\u003eCrystal-Clear Water Starts with the Right Filter Media\u003c\/h2\u003e\n\u003cp\u003eGive your fish the cleanest, healthiest environment possible with these \u003cstrong\u003eAquarium Filter Media Hollow Balls\u003c\/strong\u003e. Available in 100G, 200G, and 500G options, these bio-filter balls are engineered to maximize beneficial bacteria colonization — the cornerstone of a thriving aquatic ecosystem. Whether you keep a freshwater community tank, a tropical fish setup, or a large koi pond, these hollow balls deliver outstanding mechanical and biological filtration.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Hollow Bio-Filter Balls?\u003c\/h3\u003e\n\u003cp\u003eThe unique hollow-ball design dramatically increases surface area compared to flat or solid media. More surface area means more room for \u003cem\u003enitrifying bacteria\u003c\/em\u003e to grow — the beneficial microbes that convert toxic ammonia and nitrite into harmless nitrate, keeping your water parameters safe and stable for your fish.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e🐠 \u003cstrong\u003eSuitable for All Aquariums:\u003c\/strong\u003e Works in freshwater tanks, saltwater reef tanks, tropical fish setups, and outdoor koi ponds.\u003c\/li\u003e\n  \u003cli\u003e🔬 \u003cstrong\u003eSuperior Biological Filtration:\u003c\/strong\u003e High-surface-area hollow design promotes rapid colonization of beneficial bacteria.\u003c\/li\u003e\n  \u003cli\u003e💧 \u003cstrong\u003eMechanical Filtration:\u003c\/strong\u003e Traps debris and particulate matter, helping to reduce cloudiness and improve water clarity.\u003c\/li\u003e\n  \u003cli\u003e♻️ \u003cstrong\u003eReusable \u0026amp; Long-Lasting:\u003c\/strong\u003e Simply rinse with tank water (never tap water) to clean — no need for frequent replacement.\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eMultiple Sizes Available:\u003c\/strong\u003e Choose from 100G, 200G, or 500G to suit your tank volume and filtration system.\u003c\/li\u003e\n  \u003cli\u003e🔧 \u003cstrong\u003eEasy to Use:\u003c\/strong\u003e Compatible with most canister filters, hang-on-back filters, sump systems, and pond filter boxes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFreshwater \u0026amp; Tropical Fish Tanks\u003c\/li\u003e\n  \u003cli\u003eKoi Ponds \u0026amp; Garden Ponds\u003c\/li\u003e\n  \u003cli\u003eCichlid \u0026amp; Community Aquariums\u003c\/li\u003e\n  \u003cli\u003eSump \u0026amp; Canister Filter Systems\u003c\/li\u003e\n  \u003cli\u003eReef \u0026amp; Marine Setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eRinse the hollow balls with \u003cstrong\u003edechlorinated or tank water\u003c\/strong\u003e before first use.\u003c\/li\u003e\n  \u003cli\u003ePlace them inside your filter chamber, sump, canister filter, or filter bag.\u003c\/li\u003e\n  \u003cli\u003eAllow 2–4 weeks for beneficial bacteria to fully colonize the media.\u003c\/li\u003e\n  \u003cli\u003eTo clean, gently swish in a bucket of used tank water — never use tap water or soap, as this kills beneficial bacteria.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-5l-portable-hydrogen-water-bottle-hydrogen-rich-sports-kettle\"\u003e1.5L Hydrogen Water Bottle – Portable Hydrogen-Rich Sports Kettle\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/glow-in-the-dark-garden-pebbles-luminous-rocks-fish-tank-walkway\"\u003e100Pcs Glow in the Dark Garden Pebbles – Luminous Fish Tank Rocks\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-inch-round-clear-plastic-cake-dome-cover-food-display-cloche\"\u003e10-Inch Round Clear Cake Dome Cover | Food Display Cloche\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About Aquarium Filtration\u003c\/h3\u003e\n\u003cp\u003eUnderstanding how biological filtration works can help you keep your fish healthier. Learn about the nitrogen cycle and safe water quality for aquatic life at the U.S. Environmental Protection Agency (EPA).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: How many aquarium filter media hollow balls do I need for my tank?\u003c\/h4\u003e\n\u003cp\u003eA: As a general rule, use approximately 100G of bio-filter media per 50–75 litres (13–20 gallons) of tank water. For larger koi ponds or heavily stocked tanks, opt for the 500G option to ensure sufficient biological filtration capacity. It's always better to have slightly more media than too little.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I clean aquarium hollow filter balls without killing beneficial bacteria?\u003c\/h4\u003e\n\u003cp\u003eA: Never rinse your aquarium filter media hollow balls under tap water — chlorine in tap water kills the beneficial bacteria colonies. Instead, gently swish or rinse the balls in a bucket of used aquarium water (removed during your regular water change). This removes debris while preserving the nitrifying bacteria that keep your water safe.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these hollow bio-filter balls compatible with koi pond filter systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! These aquarium filter media hollow balls are fully compatible with koi pond filter boxes, drum filters, and gravity-fed pond filter systems. Choose the 500G pack for larger pond volumes, and place the balls in the biological filter chamber of your pond filtration setup for best results.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How long does it take for beneficial bacteria to colonize the filter media?\u003c\/h4\u003e\n\u003cp\u003eA: Typically, it takes 2–4 weeks for a full colony of nitrifying bacteria to establish on new aquarium filter media. You can speed up the cycling process by adding a bacterial starter culture or by transferring some established media from an existing cycled tank.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How many aquarium filter media hollow balls do I need for my tank?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"As a general rule, use approximately 100G of bio-filter media per 50–75 litres (13–20 gallons) of tank water. For larger koi ponds or heavily stocked tanks, opt for the 500G option to ensure sufficient biological filtration capacity. 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