{"product_id":"aqua-fx-blue-fin-500gpd-lite-commercial-ro-di-system","title":"Aqua FX Blue Fin 500GPD Lite-Commercial RO\/DI System","description":"\u003ch1 dir=\"ltr\"\u003eAquaFX Blue Fin — Light-Commercial 500GPD 4-Stage RO\/DI System\u003c\/h1\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e500 Gallons of 0 TDS Water a Day. No Booster Pump Required. Hand-Built in the USA.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe straightforward, high-volume workhorse between a residential RO\/DI unit and full commercial output — built for coral farmers, aquarium stores that don't sell water, and hobbyists running large systems who need a lot of water without a lot of complexity.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"ltr\"\u003eWhy the Blue Fin\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eMost systems in this output range either force you into a booster pump to hit usable production, or bury you in stages and consumables you don't need. The Blue Fin keeps it simple: \u003cstrong\u003e500GPD at standard household pressure (65 PSI)\u003c\/strong\u003e — more than double the output of a standard 10x2 RO\/DI system — in a lean 4-stage design that's easy to maintain and easy to budget for.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWho it's for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eSmall-to-medium coral farms that need serious volume without a full commercial footprint\u003c\/li\u003e\n\u003cli\u003eAquarium stores that don't retail water to customers\u003c\/li\u003e\n\u003cli\u003eHobbyists running large or multiple display tanks who've outgrown a residential unit\u003c\/li\u003e\n\u003cli\u003eAnyone who wants Blue Fin PRO-level output with a simpler, lower-cost filtration stack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eNeed dual carbon stages for heavier chloramine loads, or a larger DI capacity? See the Blue Fin PRO (7-stage). Running a retail water station or need even higher throughput? Step up to the Blue Marlin or Blue Marlin PRO.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"ltr\"\u003eKey Advantages\u003c\/h2\u003e\n\u003cdiv dir=\"ltr\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003cstrong\u003eBlue Fin (4-Stage)\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e500 GPD @ 65 PSI, 77°F, 250 ppm TDS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBooster pump required?\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eNo\u003c\/strong\u003e — recommended only under 45 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter size\u003c\/td\u003e\n\u003ctd\u003eLarger 10\"x4\" pre-filter, carbon block \u0026amp; DI resin (vs. standard 10\"x2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter life\u003c\/td\u003e\n\u003ctd\u003eLonger contact time = fewer cartridge changes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinal water quality\u003c\/td\u003e\n\u003ctd\u003e0 TDS, zero phosphate, laboratory-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuild\u003c\/td\u003e\n\u003ctd\u003eHand-built in the USA, heavy-duty steel mounting bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003e25\"W x 8\"D x 18.5\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStages\u003c\/td\u003e\n\u003ctd\u003e4 — sediment, carbon block, RO membrane, mixed-bed DI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp dir=\"ltr\"\u003eThe larger 10\"x4\" cartridges aren't just about capacity — longer water contact time per stage means cleaner output and cartridges that last longer between changes, so you're spending less time (and money) on maintenance than with a standard 10x2 setup.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"ltr\"\u003eHow It Works — 4 Stages of Filtration\u003c\/h2\u003e\n\u003cdiv dir=\"ltr\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eStage\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eAquaFX Premium 1-Micron Sediment Filter — 10\"x4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eAquaFX Chlorine Guzzler Carbon Block Pre-Filter — 10\"x4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eAquaFX TFC 500GPD Light-Commercial RO Membrane (Made in USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eAquaFX Mixed-Bed Color-Indicating Zero-TDS DI Resin (USA Resin) — 10\"x4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp dir=\"ltr\"\u003eColor-indicating DI resin means you'll \u003cem\u003esee\u003c\/em\u003e when the cartridge needs changing — no guesswork, no TDS creep catching you off guard.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"ltr\"\u003eFeatures\u003c\/h2\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHand-built in the USA by AquaFX\u003c\/li\u003e\n\u003cli\u003e0 TDS, zero-phosphate, ultra-pure laboratory-grade output\u003c\/li\u003e\n\u003cli\u003eLarge 10\"x4\" pre-filter, carbon block, and DI cartridge for longer service life\u003c\/li\u003e\n\u003cli\u003eHeavy-duty steel mounting bracket\u003c\/li\u003e\n\u003cli\u003eBack-lit triple TDS meter — monitor tap, RO, and final DI readings at a glance\u003c\/li\u003e\n\u003cli\u003eQuick-disconnect check valve\u003c\/li\u003e\n\u003cli\u003eAutomatic shut-off kit\u003c\/li\u003e\n\u003cli\u003eAdjustable flow restrictor\u003c\/li\u003e\n\u003cli\u003ePressure gauge with quick-connect fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltration:\u003c\/strong\u003e 4-stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 25\"W x 8\"D x 18.5\"H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet \u0026amp; product lines:\u003c\/strong\u003e 3\/8\" | \u003cstrong\u003eWaste line:\u003c\/strong\u003e 1\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFittings:\u003c\/strong\u003e Quick-connect throughout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated output:\u003c\/strong\u003e 500 GPD @ 65 PSI, 77°F, 250 ppm TDS input over 24 hours \u003cem\u003e(lower pressure, colder water, or higher source TDS will reduce output — a high-flow booster pump is recommended below 45 PSI)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003eWhat's Included\u003c\/h2\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eAquaFX Blue Fin RO\/DI system with all 4 filter stages installed\u003c\/li\u003e\n\u003cli\u003eBack-lit triple TDS meter\u003c\/li\u003e\n\u003cli\u003eHose bib adapter\u003c\/li\u003e\n\u003cli\u003e10\" canister filter wrench for fast, easy filter changes\u003c\/li\u003e\n\u003cli\u003e6 ft each of supply, drain, and product tubing\u003c\/li\u003e\n\u003cli\u003eAquaFX instruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eNeed additional feed\/drain fittings for your install? \u003ca href=\"https:\/\/www.aquariumwaterfilters.com\/Feed-Drain-Parts_c_141.html\"\u003eSee compatible installation parts here.\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"ltr\"\u003eFAQ\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDo I need a booster pump?\u003c\/strong\u003e Not at standard household pressure (65 PSI). Below 45 PSI, a high-flow booster pump (3\/8\" inlet\/outlet) is recommended to maintain rated output.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHow is this different from the Blue Fin PRO?\u003c\/strong\u003e The Blue Fin PRO adds a second carbon stage and splits DI into three dedicated cation\/anion\/mixed-bed cartridges for heavier chloramine municipal water and maximum DI capacity. The standard Blue Fin covers the same 500GPD output with a leaner 4-stage design — a great fit if your source water isn't especially chloraminated and you want a lower-cost, lower-maintenance system.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHow is this different from a standard 10x2 RO\/DI system?\u003c\/strong\u003e The Blue Fin's 10\"x4\" cartridges more than double the media volume of a standard 10x2 system, giving you both higher output and longer filter life between changes.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWill this work for my retail fish store?\u003c\/strong\u003e If you sell water to customers, we'd recommend stepping up to the Blue Marlin or Blue Marlin PRO for the added throughput. The Blue Fin is built for coral farms, non-water-retail stores, and large home systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eQuestions on sizing this system for your setup? Reach out to our team — World Wide Corals stocks AquaFX systems and genuine replacement cartridges.\u003c\/em\u003e\u003c\/p\u003e","brand":"World Wide Corals","offers":[{"title":"Default Title","offer_id":42963446235305,"sku":"AQUAFX-500","price":649.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/4958\/0912\/products\/BlueFin.jpg?v=1678490737","url":"https:\/\/worldwidecorals.com\/products\/aqua-fx-blue-fin-500gpd-lite-commercial-ro-di-system","provider":"World Wide Corals","version":"1.0","type":"link"}