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At AquaCave, we offer some of the best selection & best prices on Reverse Osmosis RO/DI Add-On Components for you marine, reef, and freshwater aquarium.

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  • Complete Drinking Water Kit

    AQUAFx

    Complete Drinking Water Kit

    Add drinking water to your current RO or RO/DI system...Add drinking water to your current RO or RO/DI system. * A wonderful addition to any of our systems * Provides drinking, cooking, and water for your ice machine too * Imagine clear ice, no more...

    $119.95
  • NH2CL (Chloramine) Blaster Upgrade Kit NH2CL (Chloramine) Blaster Upgrade Kit

    AQUAFx

    NH2CL (Chloramine) Blaster Upgrade Kit

    A standard carbon block works well to remove chlorine, however, more and more municipalities are adding ammonia to the water treatment processes to stabalize the chlorine from releasing harmful by-products into the water...A standard carbon block works...

    $69.95
  • IceCap Dual DI Filter Canister IceCap Dual DI Filter Canister IceCap Dual DI Filter Canister IceCap Dual DI Filter Canister

    IceCap

    IceCap Dual DI Filter Canister

    IceCap Dual DI Filter Canister  The IceCap Dual Stage DI systems are designed to effectively treat filtered water before using it in your aquarium. The Dual DI stage filter helps remove excessive amounts of TDS and contaminants like ammonia,...

    $59.99
  • Add-On DI Filter Add-On DI Filter

    AQUAFx

    Add-On DI Filter

    Add-On DI Filter Add On a 10 X 2 inch or 20 X 2 inch DI Filter  This Add On DI can be used with most RO units or used alone. 18 meg water at your fingertips! The unit come filled with: Nuclear grade, virgin, color indicating...

    $59.95
  • Piggy Back RO Membrane

    AQUAFx

    Piggy Back RO Membrane

    Double your output! Add 2 and Triple your output!...Double your output! Add 2 and Triple your output! Includes: * 100 GPD {DOW -75} Reverse Osmosis Membrane * Membrane Housing w/ Clips * Tee's w/ 1 piggy back, Crosses w/ 2 piggy backs * TubingProduct...

    $59.95
  • 4.4 Gal RO Pressure Tank

    AQUAFx

    4.4 Gal RO Pressure Tank

    4.4 Gal RO Pressure Tank.Pre-pressurized bladder tanks. Pressured bladder tanks have several advantages over atmospheric tanks. Pressurized tanks do not require any delivery pump and are less likely to have microbial contamination versus atmospheric...

    $49.95
  • Adjustable Float Valve

    AquaCave

    Adjustable Float Valve

    Adjustable Float Valve. Fits standard 1/4" RO tubing.Mounting requires drilling a 5/8" hole.Adjustable Float Valve. Fits standard 1/4" RO tubing.Mounting requires drilling a 5/8" hole.Product code: 1553Item No. PL-FV-SSA

    $17.95
  • Fixed Float Valve

    AquaCave

    Fixed Float Valve

    Fixed Float Valve. Fits standard 1/4" RO tubing.Mounting requires drilling a 5/8" hole.Fixed Float Valve. Fits standard 1/4" RO tubing.Mounting requires drilling a 5/8" hole.Product code: 5066Item No. PL-FV-SSF

    $15.95
15 of 15 Items