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Reverse Osmosis

Aquarium Supplies

RO/DI Systems

We carry a large variety of RO and RO/DI systems that remove impurities—chlorine, chloramines, pesticides, phosphates, heavy metals and many others—from tap water. DI (De-Ionizing) cartridges do an excellent job of removing phosphates, silicates and nitrates from tap water. They are highly recommended for reef tanks.

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  1. Captive Purity Hi-Silicate Removal TFC Replacement Membrane 25GPD

    Captive Purity Hi-Silicate Removal TFC Replacement Membrane

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    The key component for any reverse osmosis unit is its membrane. The membrane will determine the type of contaminants removed and how much water the unit will produce. Our Captive Purity Hi-S (High Silicate) membranes are the gold ...
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    Was: $28.49

    $24.79

  2. Kent Marine Hi-S TFC Membrane 35 GPD

    Kent Marine Hi-S TFC Membrane

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    When it comes to RO/DI Systems, the Kent Marine Company has always provided its customers with a wide range of products, which will cater effectively to their maintenance needs. However, the regular use of these machines may event...
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    $95.50
  3. Kent Marine Liquid RO Right 16oz

    Kent Marine Liquid RO Right

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    Do you often put water from the tap in your aquarium? You should know that this practice can be dangerous to your fish and other living things living in your aquarium. Tap water usually contain minerals like nitrate and phosphate ...
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    $29.99
  4. Kent Marine Powdered RO Right 250g

    Kent Marine Powdered RO Right

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    Have you ever thought about providing your fish with a realistic, ocean environment within the confines of their tank? Are you finding it difficult to present your marine inhabitants with the surroundings, which will make them fee...
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    $6.99
  5. Captive Purity 35 GPD Pro RO/DI Filter System - Clear Canisters

    Captive Purity Pro RO/DI Filter System - Clear Canisters

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    Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Systems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of option...
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    $220.98
  6. SpectraPure® Permeate Pump Retrofit Kits For RO/DI

    SpectraPure® Permeate Pump Retrofit Kits For RO/DI

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    Model # : PP-RFK-DI SpectraPure® Permeate Pump Retro-Fit Kit for RO/DI Systems A Permeate Pump increases net pressure across the RO membrane by isolating the membrane pressure from the pressure in the product water tank, thereby...
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    $133.99
  7. Captive Purity 35 GPD Deluxe RO Filter System - White Canisters

    Captive Purity Deluxe RO Filter System

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    Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Systems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of option...
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    $118.99
  8. Captive Purity 35 GPD Pro RO Filter System - Clear Canisters

    Captive Purity Pro RO Filter System - Clear Canisters

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    Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Systems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of option...
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    $189.99
  9. Captive Purity 35 GPD Deluxe RO/DI Filter System - Clear Canisters

    Captive Purity Deluxe RO/DI Filter System - Clear Canisters

    Read 19 Reviews

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    Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Systems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of option...
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    Was: $160.49

    $131.59

  10. Flow Restrictor 25 GPD

    Flow Restrictor

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    Flow restrictor for 25 GPD membranes—for replacement or when upgrading to a higher GPD membrane. Please note that these replacement cartridges are interchangeable with Captive Purity`s, Kent Marine`s, and SpectraPure`s RO or RO/D...
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    $3.49

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