{"product_id":"dow-filmtec-ro-membrane","title":"Dow Filmtec RO Membrane","description":"\u003cp\u003eA genuine DOW Filmtec reverse osmosis membrane, the element most aquarium RO and RO\/DI systems are built around. It strips chlorine byproducts, heavy metals, silicates, phosphates and other dissolved solids out of your tap water, and clean RO\/DI water is the foundation of a healthy reef or planted tank. Both sizes here are the standard 1.8 x 12 inch element that drops into most housings. Round out your water room with the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003ewater care gear\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eChoose Your Output\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:680px;font-size:0.95em;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;text-align:left;\"\u003e \u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;text-align:left;\"\u003e75 GPD\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;text-align:left;\"\u003e100 GPD\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eBW60-1812-75\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eTW30-1812-100HR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e75 gallons per day at 50 PSI\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e100 gallons per day at 50 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eRejection rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e98%\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e98%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eFlow restrictor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eAbout 550 ml\/min\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eAbout 800 ml\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eMost systems as shipped, and lower feed pressure\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eFilling faster, larger water demands\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePick by how much water you go through, not by tank size. The 75 GPD element is what most RO\/DI systems ship with, so it is the straight swap if you are replacing what came in your unit. The 100 GPD fills faster if you are mixing a lot of salt water or topping off a big system, as long as your feed pressure and flow restrictor keep up.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhy This Membrane\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine DOW Filmtec, made in the USA, the element most aquarium systems are built around\u003c\/li\u003e\n\u003cli\u003eThin-film composite (TFC), ANSI\/NSF Standard 58 listed\u003c\/li\u003e\n\u003cli\u003eStandard 1.8 x 12 inch size fits most RO and RO\/DI housings regardless of brand\u003c\/li\u003e\n\u003cli\u003eRemoves chlorine byproducts, heavy metals, silicates, phosphates and dissolved solids for pure top-off and salt-mixing water\u003c\/li\u003e\n\u003cli\u003eShipped dry, so it stores well until you need it\u003c\/li\u003e\n\u003cli\u003eThe 75 GPD model BW60-1812-75 is DOW's replacement for the older TW30-1812-75 and fits the same systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eInstall and Use Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch the flow restrictor to the membrane.\u003c\/strong\u003e Running a 75 GPD element behind an 800 ml\/min restrictor, or the reverse, costs you either water quality or output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlush it first.\u003c\/strong\u003e New membranes carry a factory preservative, so run the system and discard the first hour of water before you store or use any of it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeed pressure matters.\u003c\/strong\u003e These are rated at 50 PSI and do best between 50 and 80. A booster pump is worth it if your house pressure is low.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtect it.\u003c\/strong\u003e Fresh sediment and carbon prefilters are what make a membrane last. Chlorine in municipal water destroys a TFC membrane, so never run one without carbon in front of it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:680px;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eDOW Filmtec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eModels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eBW60-1812-75 (75 GPD), TW30-1812-100HR (100 GPD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eElement size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eAbout 1.8 x 12 in, fits standard housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eMembrane type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eTFC thin-film composite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eOperating pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e50 to 80 PSI, rated at 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eANSI\/NSF Standard 58 listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e\u003cstrong\u003eRated at\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;vertical-align:top;\"\u003e250 ppm softened tap water, 77°F, 50 PSI, 15% recovery. Output on an individual element can vary by about 20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit my system?\u003c\/strong\u003e\u003cbr\u003eYes for most standard RO and RO\/DI systems that use a 1.8 x 12 inch membrane, whatever brand the unit is. Check the flow restrictor matches the output you pick.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich one should I buy?\u003c\/strong\u003e\u003cbr\u003eIf you are replacing the membrane your system came with, the 75 GPD is usually the direct match. Step up to the 100 GPD if you want to fill faster and your pressure supports it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy old membrane says TW30-1812-75. Is this the same thing?\u003c\/strong\u003e\u003cbr\u003eYes. DOW replaced the TW30-1812-75 with the BW60-1812-75. It is the same 75 GPD element in the same housing size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does a membrane last?\u003c\/strong\u003e\u003cbr\u003eTypically 2 to 3 years with good prefilters, depending on your source water and how much water you make. Watch your TDS: when the rejection rate drops off, it is time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFreshwater or saltwater?\u003c\/strong\u003e\u003cbr\u003eBoth. RO\/DI water is ideal for reef, marine and planted freshwater tanks alike.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to flush it first?\u003c\/strong\u003e\u003cbr\u003eYes. Discard the first hour of production to rinse off the factory preservative before you store or use the water.\u003c\/p\u003e","brand":"Dow Filmtec","offers":[{"title":"75 GPD","offer_id":50529119961307,"sku":"BW60-1812-75","price":43.99,"currency_code":"USD","in_stock":true},{"title":"100 GPD","offer_id":49162842800347,"sku":"TW30-1812-100HR","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/200133-dow_filmtec-romembrane-100gpd-filtration-fr.jpg?v=1787239341","url":"https:\/\/squeakysaquatics.com\/products\/dow-filmtec-ro-membrane","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}