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RO Water System Replacement Filters, Kits & Accessories

Please note that these replacement cartridges are interchangeable with Captive Purity's, Kent Marine's, and SpectraPure's RO or RO/DI units. Marine Depot has researched the best replacement cartridges among these three manufacturers and offer only the best of each below.
Item #DescriptionPrice 
RO2111RO Replacement Filter Kit$17.49 
RO2113RO/DI Replacement Filter Kit$40.49 $32.39 
Item #DescriptionPrice 
RO11310.5 Micron Carbon Block Replacement Filter for Captive Purity, SpectraPure & Kent Marine$13.49 
RO11335 Micron Carbon Block Replacement Filter for Captive Purity and SpectraPure$10.49 
RO1134Inline Carbon Filter - 1/4 inch FPT x 1/4 inch FPT$17.99 
RO11110.5 Micron Sediment Replacement Filter$11.99 
RO1112Total Clarity 0.5 Micron Sediment Replacement Reverse Osmosis Filter Cartridge$8.99 
RO11131 Micron Microtec Sediment Replacement Filter$4.00 
SP2111SpectraPure® Zeta-Zorb 0.2 Micron Absolute Rate Sediment Cartridge$32.99 
SP2113SpectraPure® MaxCap Hi Capacity DI Cartridge$28.99 
SP2115SpectraPure® SilicaBuster Mixed Bed Multi Layer DI Cartridge$24.99 
SP2117SpectraPure® SilicaBuster Color Indicating Mixed Bed Multi Layer DI Cartridge$24.99 
SP2119SpectraPure® Color Indicating Ammonia Removal DI Cartridge$24.99 
SP34131SpectraPure® Mixed-Bed Color-Indicating Super DI Cartridge$28.99 
SP34106SpectraPure® SilicaBuster Mixed Bed Super DI Cartridge$29.99 
SP34406SpectraPure® MaxCap Super DI Cartridge$39.00 
SP34706SpectraPure® SilicaBuster Super DI Cartridge$28.99 
SP34726SpectraPure® SilicaBuster Color-Indicating Super DI Cartridge$28.99 
RO1153Color Indicating Mixed Bed DI Cartridge$22.99 
KM2117Kent Marine Hi-S DI Replacement Cartridge - Color Change$48.55 
CP1811Captive Purity Hi-Silicate Removal TFC Replacement Membrane 25GPD$30.99 $26.34 
CP1813Captive Purity Hi-Silicate Removal TFC Replacement Membrane 35GPD$34.99 $29.74 
CP1815Captive Purity Hi-Silicate Removal TFC Replacement Membrane 50GPD$37.99 $32.29 
CP1819Captive Purity Hi-Silicate Removal TFC Replacement Membrane 75GPD$43.99 $37.39 
CP1823Captive Purity Hi-Silicate Removal TFC Replacement Membrane 150GPD$59.99 $50.99 
CP1821Captive Purity Hi-Silicate Removal TFC Replacement Membrane 100GPD$45.99 $39.09 
KM2241Kent Marine Hi-S TFC Membrane 35 GPD$95.48 
KM2243Kent Marine Hi-S TFC Membrane 60 GPD$118.44 
RO1210Flow Restrictor 25 GPD$3.49 
RO1211Flow Restrictor 35 GPD$3.49 
RO1213Flow Restrictor 50-60 GPD$3.99 
RO1214Flow Restrictor 60 GPD$3.49 
RO1215Flow Restrictor 75-100 GPD$3.99 
RO1219Flow Restrictor 150 GPD$7.99 

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