{"product_id":"icecap-100-gpd-reverse-osmosis-ro-di-water-filtration-system","title":"IceCap 100 GPD Reverse Osmosis RO\/DI Water Filtration System","description":"\u003ch2\u003e4-Stage RO\/DI System for Reef, Saltwater, and Freshwater Aquariums\u003c\/h2\u003e \u003cdiv\u003eThe IceCap 100gpd 4-Stage RO\/DI Water Filtration System gives reef and freshwater hobbyists a reliable path to 0 TDS source water without the complexity of a powered filtration unit. Using a genuine Dow Filmtec TW30-1812-100HP membrane rated at 96-98% rejection, it strips chlorine, chloramines, heavy metals, and dissolved solids from tap water before they ever reach your tank. Output is rated at 100 gallons per day at optimal conditions, making it practical for weekly water changes on mid-to-large reef systems or frequent top-off production.\u003c\/div\u003e \u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e \u003cdiv\u003eThe system uses durable, clear filter canisters, so the filter condition is visible without disassembly. A glycerin-filled pressure gauge lets you confirm adequate feed pressure before each use. The refillable mixed-bed DI cartridge uses color-indicating resin — no guessing when it's exhausted. Installation uses standard 10-inch canisters and ¼-inch push-connect fittings, so replacement filters are widely available, and the system fits into any standard RO\/DI plumbing setup.\u003c\/div\u003e \u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e \u003ch3\u003eKey Features:\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003eGenuine Dow Filmtec TW30-1812-100HP membrane with a 96-98% typical rejection rate at rated conditions\u003c\/li\u003e\n\u003cli\u003eRefillable DI cartridge extends the life of your mixed-bed resin and reduces long-term consumable costs compared to sealed cartridge designs\u003c\/li\u003e\n\u003cli\u003eColor-changing DI resin provides a clear visual indicator that the resin is near exhaustion — no TDS meter required for basic monitoring\u003c\/li\u003e\n\u003cli\u003eGlycerin-filled pressure gauge allows you to confirm feed water pressure is within the 50-80 psi optimal range before and during production\u003c\/li\u003e\n\u003cli\u003eClear filter canisters let you inspect sediment and carbon block condition without removing them from the bracket\u003c\/li\u003e\n\u003cli\u003eAuto shut-off valve stops production when the storage vessel is full; manual flush restrictor extends membrane life\u003c\/li\u003e\n\u003cli\u003eNo electrical connection required — operates entirely on incoming line pressure\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal For:\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003eReef aquariums where corals and inverts are sensitive to chloramine, heavy metals, and elevated TDS from municipal tap water\u003c\/li\u003e\n\u003cli\u003eFreshwater planted tanks that require 0 TDS source water for precise remineralization with specific mineral profiles\u003c\/li\u003e\n\u003cli\u003eHobbyists performing 20-50 gallon weekly water changes who need consistent, high-volume RO\/DI production\u003c\/li\u003e\n\u003cli\u003eAnyone on municipal tap water with seasonal chloramine treatment or variable source quality\u003c\/li\u003e\n\u003cli\u003eNew reef builds that require a large initial volume of purified water in a short window\u003c\/li\u003e\n\u003cli\u003eAquarists upgrading from a slower 50-75 gpd unit who want more output without stepping up to a higher-pressure 150-200 gpd system\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePro Tips:\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck your feed water pressure before assuming the system is underperforming. \u003c\/strong\u003eThe 100 gpd output rating assumes 65 psi feed pressure at 77°F with 250 ppm source water TDS. Many homes run 45-55 psi, especially on upper floors or at the end of a supply line. A low-pressure condition won't damage the system, but it will increase the waste-to-product ratio and noticeably reduce daily output. If your production seems slow, check the pressure at the gauge before replacing filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlush the membrane monthly even when you're not actively making water.\u003c\/strong\u003e If the system sits idle for more than a week, bacteria and biofilm can begin forming on the membrane surface. Running a 5-10 minute flush through the manual flush restrictor before collecting water is a simple habit that extends membrane life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDon't let your DI resin run to full exhaustion before refilling.\u003c\/strong\u003e Once the color-change resin fully shifts to amber\/yellow, TDS in the product water has already begun to climb. If that water goes into your reef, you're adding the very contaminants the system is designed to remove. Check the cartridge window weekly during high-production periods and refill before the resin is completely exhausted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore a spare sediment and carbon block filter on hand. \u003c\/strong\u003eThese two stages protect the membrane from chlorine degradation and sediment fouling — the most common causes of premature membrane failure. Sediment and carbon blocks are inexpensive; a replacement Dow Filmtec membrane is not. Keeping spares available means you won't be tempted to run them past their service life.\u003c\/li\u003e\n\u003c\/ul\u003e \u003csection\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003ch5\u003e100GPD System\u003c\/h5\u003e \u003cp\u003e\u003cem\u003eIC-RI100\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e100* Gallons Per Day\u003c\/p\u003e\n\u003cp\u003e16 x 6.5 x 15.5in (LxWxH)\u003c\/p\u003e\n\u003cp\u003e3:1 Waste to Water Ratio\u003c\/p\u003e\n\u003cp\u003e98% Rejection Rate*\u003c\/p\u003e\n\u003cp\u003eAuto Shut Off Valve\u003c\/p\u003e\n\u003cp\u003eMan. Flush Flow Restrictor\u003c\/p\u003e\n\u003cp\u003eInstallation Adapters\u003c\/p\u003e\n\u003cp\u003e50-80psi Water Pressure*\u003c\/p\u003e\n\u003cp\u003e1\/4in RO Tubing Required\u003c\/p\u003e This Product \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003ch5\u003e\u003cstrong\u003e75GPD System\u003c\/strong\u003e\u003c\/h5\u003e \u003cp\u003e\u003cem\u003eIC-RI75\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e75* Gallons Per Day\u003c\/p\u003e\n\u003cp\u003e16 x 6.5 x 15.5in (LxWxH)\u003c\/p\u003e\n\u003cp\u003e3:1 Waste to Water Ratio\u003c\/p\u003e\n\u003cp\u003e99% Rejection Rate*\u003c\/p\u003e\n\u003cp\u003eAuto Shut Off Valve\u003c\/p\u003e\n\u003cp\u003eMan. Flush Flow Restrictor\u003c\/p\u003e\n\u003cp\u003eInstallation Adapters\u003c\/p\u003e\n\u003cp\u003e50-80psi Water Pressure*\u003c\/p\u003e\n\u003cp\u003e1\/4in RO Tubing Required\u003c\/p\u003e Learn More \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003ch5\u003e150GPD System\u003c\/h5\u003e \u003cp\u003e\u003cem\u003eIC-RI150\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e150* Gallons Per Day\u003c\/p\u003e\n\u003cp\u003e16 x 6.5 x 18in (LxWxH)\u003c\/p\u003e\n\u003cp\u003e1.5:1 Waste to Water Ratio\u003c\/p\u003e\n\u003cp\u003e99% Rejection Rate*\u003c\/p\u003e\n\u003cp\u003eAuto Shut Off Valve\u003c\/p\u003e\n\u003cp\u003eMan. Flush Flow Restrictor\u003c\/p\u003e\n\u003cp\u003eInstallation Adapters\u003c\/p\u003e\n\u003cp\u003e60-80psi Water Pressure*\u003c\/p\u003e\n\u003cp\u003e1\/4in RO Tubing Required\u003c\/p\u003eLearn More \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003ch5\u003e200GPD System\u003c\/h5\u003e \u003cp\u003e\u003cem\u003eIC-RI200\u003c\/em\u003e \u003c\/p\u003e\n\u003cp\u003e200* Gallons Per Day\u003c\/p\u003e\n\u003cp\u003e16 x 6.5 x 18in (LxWxH)\u003c\/p\u003e\n\u003cp\u003e1.5:1 Waste to Water Ratio\u003c\/p\u003e\n\u003cp\u003e98% Rejection Rate*\u003c\/p\u003e\n\u003cp\u003eAuto Shut Off Valve\u003c\/p\u003e\n\u003cp\u003eMan. Flush Flow Restrictor\u003c\/p\u003e\n\u003cp\u003eInstallation Adapters\u003c\/p\u003e\n\u003cp\u003e65-80psi Water Pressure*\u003c\/p\u003e\n\u003cp\u003e1\/4in RO Tubing Required\u003c\/p\u003e Learn More \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection\u003e \u003cdiv\u003e \u003cp\u003e\u003cem\u003e*Low pressure may cause the RODI system to produce excessive wastewater. Water pressure can be increased by adding a booster pump before your RO\/DI system.\u003c\/em\u003e\u003c\/p\u003e \u003c\/div\u003e \u003c\/section\u003e\u003cp\u003e\u003cem\u003eOnline exclusive: this item is ordered in for you and is usually ready within a few business days. Choose in-store pickup, local delivery or shipping at checkout.\u003c\/em\u003e\u003c\/p\u003e","brand":"IceCap","offers":[{"title":"Default Title","offer_id":53881782206757,"sku":"IC-RI100","price":202.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/5242\/1669\/files\/cv-t-1974.jpg?v=1790051522","url":"https:\/\/picayunepets.com\/products\/icecap-100-gpd-reverse-osmosis-ro-di-water-filtration-system","provider":"Poseidon's Pets of Picayune","version":"1.0","type":"link"}