{"product_id":"seachem-cuprisorb","title":"Seachem CupriSorb","description":"\u003cp\u003e\u003cstrong\u003eStrips copper from the water and shows when it is spent.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeachem CupriSorb is a copper-specific chelating resin that pulls copper and other heavy metals out of fresh and marine aquarium water. At the rated 250 mL per 600 L it removes up to 7,500 mg — around 12 ppm — of copper, and the beads darken to deep blue-black once they are loaded. It is regenerable rather than single-use, and it does not release the copper back.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper-specific chelating resin\u003c\/strong\u003e — it targets copper in all its forms rather than adsorbing indiscriminately like carbon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTells you when it is finished\u003c\/strong\u003e — the beads turn a pronounced deep blue-black, so you are not guessing at a replacement interval.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes not leach copper back\u003c\/strong\u003e — once exhausted it holds what it has captured rather than releasing it into the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegenerable\u003c\/strong\u003e — an acid soak restores it, which changes the economics on the larger sizes if you are equipped to do it safely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves other heavy metals too\u003c\/strong\u003e — cadmium, iron, nickel, zinc, cobalt and manganese.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour sizes\u003c\/strong\u003e — 100 mL through to a 4 L bulk container.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCapacity by size\u003c\/h3\u003e\n\u003cp\u003eSeachem's published rate is 250 mL for every 600 L, removing up to 7,500 mg (12 ppm) of copper. The other rows below scale that rate directly.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eWater treated at the rated rate\u003c\/th\u003e\n\u003cth\u003eCopper removed, up to\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e100 mL\u003c\/th\u003e\n\u003ctd\u003e240 L\u003c\/td\u003e\n\u003ctd\u003e3,000 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e250 mL\u003c\/th\u003e\n\u003ctd\u003e600 L\u003c\/td\u003e\n\u003ctd\u003e7,500 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e500 mL\u003c\/th\u003e\n\u003ctd\u003e1,200 L\u003c\/td\u003e\n\u003ctd\u003e15,000 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e4 L\u003c\/th\u003e\n\u003ctd\u003e9,600 L\u003c\/td\u003e\n\u003ctd\u003e120,000 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThose figures are ceilings, not schedules. Real capacity depends on how much copper is actually present, so the colour change is the reliable indicator rather than elapsed time.\u003c\/p\u003e\n\u003ch3\u003eHow to use it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePlace Seachem CupriSorb in a filter media bag and site it where water flow through the resin is greatest — a canister filter, a chemical filtration module, a box filter, or a high-flow area of a trickle filter.\u003c\/li\u003e\n\u003cli\u003eContact time is everything. Resin sitting in a dead spot does very little.\u003c\/li\u003e\n\u003cli\u003eKeep it running for at least two weeks after copper tests read zero. Substrate and rock can leach copper at levels a test kit will not show, and the resin keeps working on that residue.\u003c\/li\u003e\n\u003cli\u003eWatch the colour. Deep blue-black means it is loaded and needs replacing or regenerating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRegeneration\u003c\/h3\u003e\n\u003cp\u003eCupriSorb can be restored rather than discarded. The procedure uses muriatic acid — hydrochloric acid — which is corrosive. Do it outdoors, in a non-metal container, with gloves and eye protection, or treat the resin as single-use.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eSoak the resin in a non-metal container with 2 cups of water and half a cup of muriatic acid for one hour.\u003c\/li\u003e\n\u003cli\u003eRinse thoroughly.\u003c\/li\u003e\n\u003cli\u003eRepeat as required until the original colour returns.\u003c\/li\u003e\n\u003cli\u003eRinse well, add sodium bicarbonate until foaming stops, then rinse again before returning it to the filter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eCopper-specific chelating resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003ctd\u003eCopper in all forms, plus cadmium, iron, nickel, zinc, cobalt and manganese\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated capacity\u003c\/th\u003e\n\u003ctd\u003e250 mL per 600 L, up to 7,500 mg (12 ppm) of copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExhaustion indicator\u003c\/th\u003e\n\u003ctd\u003eBeads turn deep blue-black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLeaches copper back when exhausted\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRegenerable\u003c\/th\u003e\n\u003ctd\u003eYes — muriatic acid soak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContinuous use\u003c\/th\u003e\n\u003ctd\u003eNot recommended — depletes essential trace elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlacement\u003c\/th\u003e\n\u003ctd\u003eMedia bag, in the highest available flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes stocked\u003c\/th\u003e\n\u003ctd\u003e100 mL, 250 mL, 500 mL, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003cp\u003eMatch the size to the system volume, not the severity of the problem, because the rated capacity scales with volume. A 240 L tank is a 100 mL job. A 600 L system is a 250 mL job. Anything up to about 1,200 L takes the 500 mL container.\u003c\/p\u003e\n\u003cp\u003eThe 4 L bucket is a bulk pack for shops, quarantine facilities and large systems. There is also a \u003ca href=\"\/products\/seachem-cuprisorb-100ml-50g-bag\"\u003epre-bagged 100 mL option\u003c\/a\u003e if you would rather not deal with loose resin and a separate media bag.\u003c\/p\u003e\n\u003cp\u003eBuying larger than you need is reasonable here in a way it is not with liquids — dry resin stores well, and the leftover is available the next time a copper treatment finishes.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClearing copper out of a hospital or quarantine tank after a course of copper medication\u003c\/li\u003e\n\u003cli\u003ePreparing a tank that has previously held copper for invertebrates or corals\u003c\/li\u003e\n\u003cli\u003eRemoving heavy metals that have entered through tap water, plumbing or decor\u003c\/li\u003e\n\u003cli\u003eReef systems where any copper at all is a problem\u003c\/li\u003e\n\u003cli\u003eChasing down substrate-bound copper that a test kit is no longer detecting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRunning permanently in a display tank. Seachem does not recommend it as a fixed filter addition, because it will also strip essential trace elements over time.\u003c\/li\u003e\n\u003cli\u003eUse during a deliberate copper treatment — it will remove the medication you are dosing. Run it after the course, not during it.\u003c\/li\u003e\n\u003cli\u003eOrganic pollutants, tannins or yellowing. That is a job for \u003ca href=\"\/products\/seachem-purigen\"\u003ePurigen\u003c\/a\u003e or \u003ca href=\"\/products\/seachem-matrixcarbon\"\u003eMatrixCarbon\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePhosphate or silicate. Use \u003ca href=\"\/products\/seachem-phosguard\"\u003ePhosGuard\u003c\/a\u003e for those.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety and handling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRinse the resin before first use and keep it out of reach of children.\u003c\/li\u003e\n\u003cli\u003eRegeneration involves muriatic acid, a corrosive. Gloves, eye protection, a non-metal container and outdoor ventilation are the minimum. Always add acid to water, never water to acid.\u003c\/li\u003e\n\u003cli\u003eNeutralise with sodium bicarbonate until foaming stops before the resin goes back in the tank, and rinse again afterwards.\u003c\/li\u003e\n\u003cli\u003eDo not regenerate in a metal bucket or sink.\u003c\/li\u003e\n\u003cli\u003eSeachem publishes a Safety Data Sheet for this product at sds.seachem.com.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-cuprisorb-100ml-50g-bag\"\u003eSeachem CupriSorb 100 mL pre-bagged\u003c\/a\u003e — the same resin already in a bag, for smaller jobs\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-the-bag-13-x-25cm\"\u003eSeachem The Bag\u003c\/a\u003e — a 13 x 25 cm media bag for the loose sizes\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-zip-bag\"\u003eSeachem Zip Bag\u003c\/a\u003e — resealable media bag for resin you plan to regenerate and reuse\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-purigen\"\u003eSeachem Purigen\u003c\/a\u003e — organic filtration alongside the metal removal\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-prime\"\u003eSeachem Prime\u003c\/a\u003e — conditions tap water and binds heavy metals at each water change\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-fresh-trace\"\u003eSeachem Fresh Trace\u003c\/a\u003e — replaces the freshwater trace elements a long CupriSorb run will also have stripped\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty, delivery and Australian notes\u003c\/h3\u003e\n\u003cp\u003eThis is a consumable filter medium, so no manufacturer equipment warranty applies. Your rights under the Australian Consumer Law apply in addition to anything the manufacturer states, including the guarantees that goods are of acceptable quality and fit for the purpose described.\u003c\/p\u003e\n\u003cp\u003eThe 100 mL, 250 mL and 500 mL containers ship as ordinary parcels. The 4 L container is a bulk pack and is considerably heavier and bulkier than the others.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow do I know when CupriSorb is used up?\u003c\/h4\u003e\n\u003cp\u003eThe beads discolour to a pronounced deep blue-black. That colour change is the exhaustion indicator, and it is more reliable than counting weeks, because capacity depends on how much copper is actually in the water.\u003c\/p\u003e\n\u003ch4\u003eDoes exhausted CupriSorb release the copper back into the tank?\u003c\/h4\u003e\n\u003cp\u003eNo. Seachem states that CupriSorb does not leach captured copper back once it is exhausted. It should still be removed or regenerated, because a loaded resin is no longer doing anything useful.\u003c\/p\u003e\n\u003ch4\u003eCan CupriSorb stay in the filter permanently?\u003c\/h4\u003e\n\u003cp\u003eSeachem does not recommend it as a permanent filter addition. Left in indefinitely, Seachem CupriSorb will also deplete essential trace elements, so treat it as a corrective medium rather than a standing one.\u003c\/p\u003e\n\u003ch4\u003eWhat else does it remove besides copper?\u003c\/h4\u003e\n\u003cp\u003eCadmium, iron, nickel, zinc, cobalt and manganese are all removed alongside copper, which is worth knowing if you dose iron or trace supplements.\u003c\/p\u003e\n\u003ch4\u003eHow long should it run after copper tests read zero?\u003c\/h4\u003e\n\u003cp\u003eAt least two weeks. Substrate and rock can hold copper that leaches back at concentrations below what a test kit will detect, and the extra fortnight deals with that residue.\u003c\/p\u003e\n\u003ch4\u003eCan it be used while dosing a copper medication?\u003c\/h4\u003e\n\u003cp\u003eNo. It will strip the medication out of the water along with any other copper. Use it after the treatment course is finished, when the goal is getting the copper out.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244184486179,"sku":null,"price":39.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244184518947,"sku":null,"price":65.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244184551715,"sku":null,"price":118.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244184584483,"sku":null,"price":836.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0209-cuprisorb-4-l_0aa257bf-8973-424e-a10a-9bf02fc31621.png?v=1782710765","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/seachem-cuprisorb","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}