Skip to main content
Hi !Hi! Sign in or registerHelp & Contact
Sell
Watchlist
My eBay
  • Summary
  • Recently Viewed
  • Bids/Offers
  • Watchlist
  • Purchase History
  • Selling
  • Saved feed
  • Saved Searches
  • Saved Sellers
  • Messages
Please sign-in to view notifications.
Loading...
eBay Home
Advanced
Copyright © 1995-2025 eBay Inc. All Rights Reserved. User Agreement, Privacy, Payments Terms of Use, Cookies and AdChoice

50 gal. Tank Capacity Aquarium Reverse Reverse Osmosis Units Systems

breadcrumb

  • eBay
    • Pet Supplies
    • Fish & Aquariums
  • Pet Supplies
  • Fish & Aquariums
  • Reverse Osmosis & Deionization
  • 50 gal. Tank Capacity Aquarium Reverse Reverse Osmosis Units Systems

Shop by category

  • Fish & Aquariums
    • Reverse Osmosis & Deionization
    • Air Stones
    • Algae Repellent
    • Aquariums & Tanks
    • CO2 Equipment
    • Cleaning & Maintenance
    • Coral & Live Rock
    • Decorations
    • Feeders
    • Filter Media & Accessories
    • Filters
    • Fish Pond Supplies
    • Food
    • Gravel & Substrate
    • Health Care
    • Heaters & Chillers
    • Lighting & Bulbs
    • Live Fish
    • Live Invertebrates
    • Live Plants
    • Meters & Controllers
    • Other Fish & Aquarium Supplies
    • Pumps (Air)
    • Pumps (Water)
    • Tubing & Valves
    • UV Sterilizers
    • Water Tests & Treatment
    • Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System - Image 1 of 4
    • Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System - Image 2 of 4
    • Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System - Image 3 of 4
    • Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System - Image 4 of 4

    Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System

    Brand New · Aquatic LIFE
    S$ 120.29
    or Best Offer
    S$ 95.14 shipping
    S⁣p⁣o⁣n⁣s⁣o⁣3⁣1⁣r⁣ ⁣е⁣d⁣O⁣⁣N⁣⁣⁣⁣ ⁣⁣1⁣V⁣⁣ ⁣⁣⁣G⁣⁣
    • Aquaticlife 540019 RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter - Image 1 of 4
    • Aquaticlife 540019 RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter - Image 2 of 4
    • Aquaticlife 540019 RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter - Image 3 of 4
    • Aquaticlife 540019 RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter - Image 4 of 4

    Aquaticlife 540019 RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter

    Brand New · Aquatic LIFE
    S$ 123.68
    or Best Offer
    S$ 177.52 shipping
    1⁣M⁣Ѕ⁣p⁣o⁣ ⁣O⁣n⁣T⁣ ⁣Q⁣O⁣s⁣ ⁣o⁣r⁣e⁣d⁣O⁣A⁣ ⁣⁣9⁣⁣J⁣ ⁣⁣⁣
    • Aquatic Life RO Buddie Four Stage Reverse Osmosis System with Color Changing - Image 1 of 4
    • Aquatic Life RO Buddie Four Stage Reverse Osmosis System with Color Changing - Image 2 of 4
    • Aquatic Life RO Buddie Four Stage Reverse Osmosis System with Color Changing - Image 3 of 4
    • Aquatic Life RO Buddie Four Stage Reverse Osmosis System with Color Changing - Image 4 of 4

    Aquatic Life RO Buddie Four Stage Reverse Osmosis System with Color Changing

    Brand New · Aquatic LIFE
    S$ 143.42
    S$ 75.67 shipping
    5 watching
    C⁣S⁣G⁣p⁣ ⁣о⁣3⁣n⁣s⁣o⁣L⁣r⁣e⁣d⁣⁣⁣ ⁣Y⁣J⁣⁣⁣ ⁣T⁣0⁣ ⁣⁣G⁣R⁣
    • RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt... - Image 1 of 4
    • RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt... - Image 2 of 4
    • RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt... - Image 3 of 4
    • RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt... - Image 4 of 4

    RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt...

    Brand New · Aquatic LIFE
    S$ 123.68
    S$ 90.27 shipping
    Only 1 left!
    S⁣H⁣D⁣p⁣ ⁣o⁣n⁣C⁣s⁣K⁣o⁣ ⁣r⁣е⁣d⁣⁣⁣3⁣⁣G⁣⁣ ⁣5⁣B⁣ ⁣⁣⁣⁣
  • Aquatic Life RO 540019 50 GPD Reverse Osmosis Systems Parts - Image 1 of 4

    Aquatic Life RO 540019 50 GPD Reverse Osmosis Systems Parts

    Pre-Owned
    S$ 20.21
    or Best Offer
    S$ 54.40 shipping
    D⁣⁣⁣H⁣⁣⁣⁣⁣⁣⁣⁣ ⁣W⁣M⁣⁣ ⁣E⁣⁣5⁣⁣⁣ ⁣5⁣⁣⁣⁣N⁣⁣
  • Aquatic Life RO 3 Stage Compact Reverse Osmosis System 50 GPD High Efficiency - Image 1 of 4

    Aquatic Life RO 3 Stage Compact Reverse Osmosis System 50 GPD High Efficiency

    Brand New
    S$ 90.91
    S$ 92.80 shipping
    H⁣⁣X⁣ ⁣⁣⁣T⁣3⁣ ⁣M⁣6⁣ ⁣K⁣3⁣ ⁣3⁣⁣J⁣⁣ ⁣⁣P⁣⁣⁣⁣⁣⁣⁣
  • AquaticLife Smart Buddie RO Water Booster Pump Kit for 50-100 GPD Reverse Osm... - Image 1 of 4

    AquaticLife Smart Buddie RO Water Booster Pump Kit for 50-100 GPD Reverse Osm...

    Brand New
    S$ 241.35
    S$ 101.36 shipping
    3 watching
    K⁣Q⁣ ⁣⁣⁣J⁣P⁣ ⁣3⁣⁣D⁣ ⁣⁣Z⁣⁣V⁣⁣⁣ ⁣C⁣⁣4⁣⁣ ⁣⁣A⁣⁣⁣
  • Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter Syst... - Image 1 of 4

    Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter Syst...

    Brand New · Aquatic LIFE
    S$ 126.14
    S$ 75.16 shipping
    ⁣⁣⁣E⁣K⁣⁣ ⁣⁣⁣⁣⁣8⁣⁣⁣O⁣⁣⁣ ⁣9⁣⁣⁣⁣Z⁣ ⁣⁣⁣2⁣⁣
  • RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt... - Image 1 of 4

    RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt...

    Brand New · Aquatic LIFE
    S$ 166.53
    S$ 112.78 shipping
    ⁣H⁣⁣⁣⁣⁣K⁣⁣⁣ ⁣⁣⁣1⁣3⁣ ⁣U⁣⁣⁣⁣Q⁣⁣ ⁣⁣⁣⁣K⁣1⁣⁣
  • RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt... - Image 1 of 4

    RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filt...

    Brand New · Aquatic LIFE
    S$ 140.80
    S$ 107.48 shipping
    E⁣B⁣ ⁣⁣Z⁣Y⁣⁣ ⁣⁣⁣8⁣R⁣⁣ ⁣⁣K⁣7⁣ ⁣A⁣B⁣ ⁣S⁣⁣⁣⁣⁣⁣ ⁣
  • New Aquatic Life RO Buddie Three Stage Reverse Osmosis System 50 GDP 540016 - Image 1 of 4

    New Aquatic Life RO Buddie Three Stage Reverse Osmosis System 50 GDP 540016

    Brand New
    S$ 97.91
    S$ 127.58 shipping
    B⁣⁣⁣4⁣⁣⁣ ⁣⁣⁣K⁣W⁣ ⁣Y⁣7⁣ ⁣Z⁣⁣S⁣⁣⁣⁣ ⁣H⁣⁣⁣⁣3⁣ ⁣
  • Aquatic Life Classic 100GPD, 4 Stage RO/DI Unit (Formerly RO Junior) - Image 1 of 1

    Aquatic Life Classic 100GPD, 4 Stage RO/DI Unit (Formerly RO Junior)

    Brand New · Aquatic LIFE
    S$ 286.78
    S$ 150.45 shipping
    9⁣⁣⁣⁣⁣⁣⁣⁣U⁣ ⁣L⁣⁣⁣⁣Y⁣ ⁣⁣Y⁣S⁣⁣ ⁣R⁣7⁣ ⁣A⁣⁣6⁣⁣
  • Aquatic Life Smart Buddie Booster Pump for 50-100 GPD Reverse Osmosis Systems - Image 1 of 4

    Aquatic Life Smart Buddie Booster Pump for 50-100 GPD Reverse Osmosis Systems

    Brand New
    S$ 124.50
    or Best Offer
    S$ 109.63 shipping
    ⁣⁣G⁣⁣9⁣ ⁣W⁣⁣W⁣⁣ ⁣I⁣5⁣⁣ ⁣⁣B⁣⁣⁣G⁣ ⁣⁣K⁣⁣⁣5⁣ ⁣7⁣
  • Aquatic Life RO 540019 50 GPD Reverse Osmosis Systems - Image 1 of 4

    Aquatic Life RO 540019 50 GPD Reverse Osmosis Systems

    Pre-Owned · Aquatic LIFE
    S$ 61.86
    S$ 73.26 shipping
    1⁣⁣⁣⁣W⁣ ⁣⁣W⁣⁣E⁣⁣⁣ ⁣J⁣R⁣⁣ ⁣⁣N⁣L⁣⁣ ⁣⁣⁣I⁣O⁣⁣ ⁣
  • Aquatic Life RO Buddie Four Stage Reverse Osmosis System with Color Changing Mix - Image 1 of 4

    Aquatic Life RO Buddie Four Stage Reverse Osmosis System with Color Changing Mix

    Pre-Owned · Aquatic LIFE
    S$ 125.90
    or Best Offer
    S$ 75.15 shipping
    Z⁣⁣I⁣⁣⁣ ⁣C⁣⁣D⁣ ⁣⁣⁣E⁣⁣⁣3⁣⁣ ⁣Y⁣⁣N⁣⁣ ⁣⁣X⁣⁣⁣⁣
  • All Listings
  • Auction
  • Buy It Now
  • Best Match
  • Time: ending soonest
  • Time: newly listed
  • Price + Shipping: lowest first
  • Price + Shipping: highest first
  • Distance: nearest first
  • List View
  • Gallery View

15 results

Sort: Best Match

  • Best Match
  • Time: ending soonest
  • Time: newly listed
  • Price + Shipping: lowest first
  • Price + Shipping: highest first
  • Distance: nearest first
    • Type: Reverse Osmosis Unit- Selected
    • Tank Capacity: 50 gal.- Selected
    Clear All