{"product_id":"fluval-ac50-zeo-carb-insert-3-pack","title":"Fluval AC50 Zeo Carb Insert 3 Pack","description":"\u003cp\u003e\u003cstrong\u003ePulls ammonia out without adding phosphate back in.\u003c\/strong\u003e This is the genuine Fluval Zeo-Carb insert for the AquaClear 50 (AC50) power filter, part 19653, supplied as a pack of three 90 g bags (270 g total). It's a chemical-stage swap for the Clear-Carb insert, aimed at ammonia rather than general water polish.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Fluval part 19653\u003c\/strong\u003e — sized to the AC50's chemical media slot, same position as Clear-Carb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZeolite and activated carbon combined\u003c\/strong\u003e — zeolite adsorbs ammonia directly; carbon handles odour and discolouration alongside it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWon't raise phosphate\u003c\/strong\u003e — the point of difference from a carbon-and-resin blend, which matters on a planted or reef tank where phosphate is already being managed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-pack\u003c\/strong\u003e — covers three monthly changes without a mid-cycle reorder.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003e19653\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e270 g total (3 x 90 g bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e3 bags\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFiltration stage\u003c\/th\u003e\n\u003ctd\u003eChemical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater only — the zeolite's ammonia-adsorption doesn't work in marine or reef water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended replacement\u003c\/th\u003e\n\u003ctd\u003eEvery 4 weeks, one bag per change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter\u003c\/th\u003e\n\u003cth\u003eTakes this insert\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAquaClear 50 \/ AC50\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAquaClear 20 \/ AC20, 30 \/ AC30\u003c\/td\u003e\n\u003ctd\u003eNo — Fluval sells a separate Zeo-Carb sized for these\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAquaClear 70 \/ AC70, 110 \/ AC110\u003c\/td\u003e\n\u003ctd\u003eNo — larger Zeo-Carb bag, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e3 x Zeo-Carb bags, 90 g each\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch3\u003eNot included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003ca href=\"\/products\/fluval-ac50-bio-foam-insert-blue-3-pack\"\u003eBio-Foam\u003c\/a\u003e and \u003ca href=\"\/products\/fluval-ac50-biomax-insert-80gm\"\u003eBioMax\u003c\/a\u003e stages either side of it.\u003c\/li\u003e\n\u003cli\u003eThe AC50 filter unit itself.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for a freshwater tank carrying an ammonia load — new setups still cycling, a recent stocking increase, or a spike after a filter clean.\u003c\/p\u003e\n\u003cp\u003eNot suitable for marine or reef tanks — the same exchange sites that bind ammonia in freshwater are largely saturated by the salts in saltwater, so the media has little effect there. Also not suitable for a tank being actively dosed with a medication that needs to stay in the water column — pull the bag before dosing, same as any carbon-based media.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eReplace one bag every 4 weeks. Zeolite's ammonia capacity is fixed — once saturated it stops adsorbing, so there's no benefit to leaving a spent bag in place.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/fluval-ac50-clear-carb-insert-1-pack\"\u003eClear-Carb insert for AC50\u003c\/a\u003e — swap back in once ammonia is under control and general polishing is the priority\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/fluval-ac50-biomax-insert-80gm\"\u003eBioMax insert for AC50\u003c\/a\u003e — the biological stage that takes over ammonia control long-term\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/fluval-ac50-bio-foam-insert-blue-3-pack\"\u003eBio-Foam insert for AC50\u003c\/a\u003e — the mechanical stage ahead of it\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eSupplied as genuine Fluval replacement media. Your rights under the Australian Consumer Law apply in full and nothing here limits them. Ships as a standard small parcel anywhere in Australia.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhen should I use Zeo-Carb instead of Clear-Carb?\u003c\/h4\u003e\n\u003cp\u003eWhen ammonia is the immediate concern — a new tank still cycling, or a spike after a stocking change or a heavy clean. Clear-Carb is the better everyday choice once ammonia is stable.\u003c\/p\u003e\n\u003ch4\u003eDoes Zeo-Carb replace the need for BioMax?\u003c\/h4\u003e\n\u003cp\u003eNo. Zeolite is a stop-gap while the tank's own bacteria colony, which lives mainly on BioMax and the foam insert, catches up. It doesn't replace biological filtration long-term.\u003c\/p\u003e\n\u003ch4\u003eWill it raise phosphate like some chemical media does?\u003c\/h4\u003e\n\u003cp\u003eNo — Fluval states it will not raise phosphate levels, which is the reason to choose it over a generic carbon-and-resin blend on a planted or reef tank.\u003c\/p\u003e\n","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293295132963,"sku":"FAQ34","price":15.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-ac50-zeo-carb-insert-43180035014947.webp?v=1790235223","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-ac50-zeo-carb-insert-3-pack","provider":"Nicks AOT","version":"1.0","type":"link"}