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

Fresh Water Aquarium Meters & Controllers

breadcrumb

  • eBay
    • Pet Supplies
    • Fish & Aquariums
  • Pet Supplies
  • Fish & Aquariums
  • Meters & Controllers
  • Fresh Water Aquarium Meters & Controllers

Shop by category

  • Fish & Aquariums
    • Meters & Controllers
    • 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
    • Other Fish & Aquarium Supplies
    • Pumps (Air)
    • Pumps (Water)
    • Reverse Osmosis & Deionization
    • Tubing & Valves
    • UV Sterilizers
    • Water Tests & Treatment
    • Aquarium Water Quality Monitor with Clear LCD Display - 4 Parameters, Easy Setup - Image 1 of 4
    • Aquarium Water Quality Monitor with Clear LCD Display - 4 Parameters, Easy Setup - Image 2 of 4
    • Aquarium Water Quality Monitor with Clear LCD Display - 4 Parameters, Easy Setup - Image 3 of 4
    • Aquarium Water Quality Monitor with Clear LCD Display - 4 Parameters, Easy Setup - Image 4 of 4

    Aquarium Water Quality Monitor with Clear LCD Display - 4 Parameters, Easy Setup

    Brand New · Unbranded
    S$ 327.86
    Was: S$ 364.29was - S$ 364.29
    S$ 37.74 shipping
    S⁣M⁣р⁣o⁣Z⁣n⁣s⁣ ⁣C⁣o⁣M⁣r⁣e⁣ ⁣d⁣⁣X⁣⁣⁣A⁣⁣ ⁣0⁣⁣⁣⁣M⁣⁣
    • Floating Aquarium Thermometers Mercury Free Lot Of 2 Therma Temp - Image 1 of 4
    • Floating Aquarium Thermometers Mercury Free Lot Of 2 Therma Temp - Image 2 of 4
    • Floating Aquarium Thermometers Mercury Free Lot Of 2 Therma Temp - Image 3 of 4
    • Floating Aquarium Thermometers Mercury Free Lot Of 2 Therma Temp - Image 4 of 4

    Floating Aquarium Thermometers Mercury Free Lot Of 2 Therma Temp

    Brand New · Penn-Plax
    S$ 15.34
    or Best Offer
    S$ 88.70 shipping
    O⁣0⁣S⁣ ⁣p⁣o⁣n⁣ѕ⁣V⁣F⁣ ⁣X⁣E⁣o⁣ ⁣M⁣1⁣r⁣ ⁣S⁣e⁣d⁣I⁣ ⁣⁣Q⁣⁣⁣
    • Accurate Fish Tank Thermometer Aquarium LCD Screen Display Tools Electronic - Image 1 of 4
    • Accurate Fish Tank Thermometer Aquarium LCD Screen Display Tools Electronic - Image 2 of 4
    • Accurate Fish Tank Thermometer Aquarium LCD Screen Display Tools Electronic - Image 3 of 4
    • Accurate Fish Tank Thermometer Aquarium LCD Screen Display Tools Electronic - Image 4 of 4

    Accurate Fish Tank Thermometer Aquarium LCD Screen Display Tools Electronic

    Brand New · Unbranded
    S$ 27.79 to S$ 29.74
    S$ 9.30 shipping
    S⁣G⁣Z⁣ ⁣N⁣4⁣ ⁣G⁣p⁣U⁣ ⁣o⁣A⁣M⁣n⁣s⁣о⁣ ⁣r⁣8⁣I⁣ ⁣C⁣⁣e⁣d⁣ ⁣⁣
    • Floating Aquarium Thermometer Mercury Free with Suction Cup for Fish Tanks - Image 1 of 3
    • Floating Aquarium Thermometer Mercury Free with Suction Cup for Fish Tanks - Image 2 of 3
    • Floating Aquarium Thermometer Mercury Free with Suction Cup for Fish Tanks - Image 3 of 3

    Floating Aquarium Thermometer Mercury Free with Suction Cup for Fish Tanks

    Brand New · Penn-Plax
    S$ 15.90
    S$ 28.54 shipping
    X⁣Ѕ⁣p⁣o⁣S⁣ ⁣n⁣s⁣N⁣U⁣o⁣ ⁣r⁣e⁣d⁣⁣3⁣⁣⁣N⁣ ⁣C⁣⁣U⁣ ⁣⁣⁣⁣
  • PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank - Image 1 of 2

    PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank

    Brand New
    S$ 15.35
    S$ 29.42 shipping
    ⁣⁣J⁣A⁣⁣⁣ ⁣9⁣Q⁣ ⁣⁣2⁣2⁣⁣ ⁣⁣V⁣⁣⁣8⁣⁣⁣ ⁣0⁣I⁣ ⁣M⁣⁣
  • Accurate Tank Thermometer Aquarium Tools for Equipment Glass - Image 1 of 1

    Accurate Tank Thermometer Aquarium Tools for Equipment Glass

    Brand New · Unbranded
    S$ 33.54
    Was: S$ 36.68was - S$ 36.68
    Free international shipping
    G⁣⁣⁣D⁣ ⁣⁣⁣⁣H⁣C⁣ ⁣8⁣⁣⁣⁣⁣0⁣⁣⁣⁣⁣ ⁣2⁣⁣⁣S⁣⁣⁣
  • Fish Tank Thermometer Aquarium Parts Temperature Measurement for Pools - Image 1 of 1

    Fish Tank Thermometer Aquarium Parts Temperature Measurement for Pools

    Brand New · Unbranded
    S$ 35.10
    Was: S$ 37.74was - S$ 37.74
    Free international shipping
    A⁣⁣⁣6⁣⁣⁣⁣⁣⁣⁣ ⁣C⁣M⁣ ⁣⁣F⁣⁣⁣8⁣ ⁣8⁣⁣X⁣⁣⁣⁣ ⁣⁣
  • Accurate Tank Thermometer Aquarium Tools Temperature - Image 1 of 1

    Accurate Tank Thermometer Aquarium Tools Temperature

    Brand New · Unbranded
    S$ 37.25
    Was: S$ 39.22was - S$ 39.22
    Free international shipping
    6⁣O⁣⁣ ⁣⁣⁣7⁣⁣U⁣ ⁣1⁣O⁣ ⁣6⁣⁣S⁣ ⁣⁣Y⁣3⁣⁣⁣ ⁣I⁣⁣⁣⁣⁣
  • Mini Aquarium Fish Tank 2L LED Light Lamp Filter Pump Self Circulating USB Decor - Image 1 of 4

    Mini Aquarium Fish Tank 2L LED Light Lamp Filter Pump Self Circulating USB Decor

    Brand New
    S$ 55.84
    S$ 7.45 shipping
    ⁣X⁣F⁣⁣ ⁣9⁣⁣1⁣⁣⁣⁣ ⁣J⁣⁣⁣⁣⁣G⁣⁣⁣ ⁣⁣U⁣I⁣ ⁣⁣Z⁣⁣
  • Marina Aquarium Floating Thermometer w/ Suction Cup | Hagen 11201 - Image 1 of 1

    Marina Aquarium Floating Thermometer w/ Suction Cup | Hagen 11201

    Brand New · Marina
    S$ 5.05
    or Best Offer
    S$ 16.64 shipping
    V⁣4⁣ ⁣X⁣8⁣ ⁣E⁣L⁣ ⁣F⁣O⁣ ⁣H⁣⁣L⁣⁣ ⁣⁣⁣⁣ ⁣⁣⁣⁣ ⁣⁣⁣⁣
  • Auto Water Filler Power Free Water Level Controller Auto-top-Off Automatic - Image 1 of 3

    Auto Water Filler Power Free Water Level Controller Auto-top-Off Automatic

    Brand New
    S$ 59.53
    S$ 30.73 shipping
    ⁣⁣6⁣E⁣ ⁣⁣J⁣⁣⁣W⁣⁣⁣ ⁣4⁣O⁣⁣ ⁣S⁣⁣W⁣ ⁣H⁣5⁣ ⁣⁣⁣⁣C⁣
  • Aqua One A1-92000 Quick Drop pH Test Kit Range 6 to 7.8 with Adjusting Salts - Image 1 of 1

    Aqua One A1-92000 Quick Drop pH Test Kit Range 6 to 7.8 with Adjusting Salts

    Brand New · Aqua One
    S$ 25.13
    or Best Offer
    S$ 16.71 shipping
    V⁣H⁣ ⁣⁣S⁣⁣Q⁣ ⁣⁣F⁣⁣⁣⁣⁣5⁣⁣ ⁣⁣⁣⁣⁣⁣⁣⁣L⁣R⁣⁣ ⁣
  • Hagen Marina MINERVA Fish Aquarium LCD OUTSIDE Thermometer 66-88 F 19-33C - Image 1 of 1

    Hagen Marina MINERVA Fish Aquarium LCD OUTSIDE Thermometer 66-88 F 19-33C

    Brand New · Marina
    S$ 6.96
    or Best Offer
    S$ 34.43 shipping
    ⁣⁣⁣⁣⁣⁣⁣U⁣⁣⁣V⁣ ⁣F⁣W⁣⁣ ⁣⁣⁣⁣⁣⁣⁣⁣⁣Y⁣3⁣ ⁣K⁣
  • ATO Auto Top Off System NG11 for Saltwater Aquarium Long Life Design with Dua... - Image 1 of 4

    ATO Auto Top Off System NG11 for Saltwater Aquarium Long Life Design with Dua...

    Brand New
    S$ 82.18
    S$ 48.70 shipping
    S⁣p⁣o⁣Q⁣V⁣n⁣ѕ⁣o⁣ ⁣6⁣K⁣r⁣e⁣d⁣⁣⁣⁣⁣ ⁣⁣W⁣⁣⁣6⁣⁣⁣ ⁣⁣
  • Fish Tank Thermometer Aquarium Energy Saving Parts for Aquatic Pets Supplies - Image 1 of 1

    Fish Tank Thermometer Aquarium Energy Saving Parts for Aquatic Pets Supplies

    Brand New · Unbranded
    S$ 35.42
    Was: S$ 38.94was - S$ 38.94
    Free international shipping
    ⁣⁣F⁣F⁣ ⁣J⁣⁣⁣⁣⁣⁣3⁣⁣⁣⁣⁣ ⁣W⁣⁣W⁣⁣ ⁣⁣F⁣Y⁣ ⁣R⁣⁣
  • American Marine Pinpoint Conductivity Monitor + Probe - Image 1 of 3

    American Marine Pinpoint Conductivity Monitor + Probe

    Pre-Owned
    S$ 27.85
    or Best Offer
    S$ 43.06 shipping
    ⁣R⁣P⁣⁣⁣ ⁣⁣⁣D⁣L⁣⁣⁣ ⁣⁣D⁣D⁣⁣⁣⁣⁣⁣⁣⁣ ⁣F⁣⁣⁣G⁣
  • 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

16 results

Sort: Best Match

  • Best Match
  • Time: ending soonest
  • Time: newly listed
  • Price + Shipping: lowest first
  • Price + Shipping: highest first
  • Distance: nearest first
  • Water Type: Fresh- Selected