{"product_id":"cunina-12-pack-large-filter-cartridges-for-tetra-whisper-compatible-with-20i-40i-iq-pf-tanks","title":"Cunina 12-Pack Large Filter Cartridges for Tetra Whisper | Compatible with 20i\/40i, IQ, PF Tanks","description":"\u003ch2\u003eEfficient filtration for Tetra Whisper large filters\u003c\/h2\u003e\n\u003cp\u003eMeet Cunina’s 12-pack of large filter cartridges, designed to fit Tetra Whisper large 20i and 40i units, as well as IQ 20\/30\/45\/60 and PF20\/30\/40\/60 models. Each cartridge measures 6.7 inches long by 4.5 inches wide and ships sealed to preserve quality, so you can count on consistent performance in your aquarium.\u003c\/p\u003e\n\u003ch3\u003eWhat makes these cartridges stand out\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerfect fit\u003c\/strong\u003e — engineered to work with the Whisper family, helping maintain steady flow and filtration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearer water\u003c\/strong\u003e — dual-sided mesh captures debris and fish waste, helping minimize odors and discoloration while supporting a balanced environment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium materials\u003c\/strong\u003e — activated carbon helps absorb heavy metals and impurities; non-woven fabric traps fine particles for cleaner water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese cartridges arrive ready to use. They come fully assembled so you can replace them quickly and keep your tank maintenance simple. A light rinse and brief soak before first use helps remove dust and prepare the media for filtration.\u003c\/p\u003e\n\u003ch3\u003eUsage guidance and replacement cadence\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple setup\u003c\/strong\u003e — soak for 5 minutes, then rinse for 30 seconds to remove packaging dust.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplacement schedule\u003c\/strong\u003e — a 12-pack covers many months of use; replace monthly or according to your tank’s load and water quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReal-life scenarios include small community tanks, planted setups, or homes with moderate bio-loads where stable filtration and water clarity are valued. Cunina emphasizes practical filtration benefits without claiming guaranteed outcomes.\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: Are these Cunina cartridges compatible with all Tetra Whisper models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They fit large Whisper filters such as 20i, 40i, IQ 20\/30\/45\/60, and PF20\/30\/40\/60.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace Cunina filter cartridges?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: We recommend monthly replacements to maintain water quality, adjusting for tank size and fish load.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Cunina","offers":[{"title":"Default Title","offer_id":40564840431745,"sku":"B0CZ9BTBQJ","price":67.24,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4757\/3633\/files\/cunina-12pack-filter-cartridges-large-compatible-with-tetra-whisper-front-view.jpg?v=1765955202","url":"https:\/\/petiva.ca\/products\/cunina-12-pack-large-filter-cartridges-for-tetra-whisper-compatible-with-20i-40i-iq-pf-tanks","provider":"Petiva","version":"1.0","type":"link"}