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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. Kold Ster-il Filtration System - Small

    Kold Ster-il Filtration System - Small

    Kold Ster-il Water Filter uses ten inch canisters (clear), 3/4" Npt. Threaded fittings, flows 3.8 Gpm (14.3Lpm) for approximately 5,000 gallons (18925 L.). The smaller system can provide lower lead, mercury, cadmium levels due to ...
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    $360.01
  2. Kold Ster-il Replacement Cartridge

    Kold Ster-il Replacement Cartridge

    Did you know that the central part of a water filtration system is the replacement cartridge? Of course, you already know that. For aquarists like you, replacement cartridges for filters are always considered very important. F...
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    $84.99

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