Aquarium Meters & Controllers

5,783 results

Reef Factory KH Keeper Plus Aquarium Alkalinity Tester
Pre-owned
£141.12
(£141.12/Unit)
or Best Offer
£4.26 P&P
$Handheld Refractometer for Marine Aquarium Fish Tank Salinity Testing Salt Meter - Image 1 of 1$
Handheld Refractometer for Marine Aquarium Fish Tank Salinity Testing Salt Meter
Brand new
£19.99
Free postage
Click & Collect
338 sold
Probe Tube Holder Hose, OHP, PH, Temperature - Aquarium Reef Marine
Brand new
£12.16 to £16.84
Free postage
Click & Collect
Solar LCD Digital Thermometer for Fish Tank Tropical Marine Aquarium
Brand new
£12.99
Free postage
Click & Collect
51 sold
AQUARIUM THERMOMETER FOR FISH TANK BREW WINDOW LCD FLAT ADHESIVE STRIP [2/1]
Brand new
£1.55
Free postage
2,247 sold
Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller
Brand new
(110)
£3.69
Free postage
4,463 sold
GHL DOSER 2.1 SLAVE
Pre-owned
£151.52
or Best Offer
£3.94 P&P
STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WINDOW WATER STRIP *UK
Brand new · Unbranded
£2.28 to £9.95
Free postage
1,156 sold
Aquarium Fish Tank Temperature Thermometers Digital & Analogue Stick On °C & °F
Brand new
£1.99 to £6.49
Free postage
840 sold
Fish Tank Tropical Aquarium Thermometer Floating Tempered Glass Sucker Easy Read
Brand new
£3.29
Free postage
190 sold
Superfish Aquarium Thermometer Tropical Fish Tank Temperature Easy to Use
Brand new · Superfish
(15)
£3.75
Free postage
1,147 sold
FLUVAL 2-in-1 DIGITAL THERMOMETER MEASURES WATER & ROOM TEMPERATURE AQUARIUM
Brand new · Fluval
(63)
£10.99
Free postage
Click & Collect
642 sold
Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller
Brand new · Unbranded
£3.31
Free postage
53 sold
Aquarium Fish Tank Gauge Touch Screen Digital Thermometer Temperature Sensor
Brand new · Unbranded
£3.55 to £8.98
Free postage
Reef Factory KH Keeper Plus Aquarium Alkalinity Tester
Brand new
£363.72
(£363.72/Unit)
or Best Offer
£12.47 P&P
Neptune Apex Trident Mini 3D Printed Casing
Brand new
£50.00
Free postage
Click & Collect
LCD DIGITAL THERMOMETER FOR FISH TANK WATER, FRIDGE FREEZER TEMPERATURE, 2 Meter
Brand new
£3.95
Free postage
255 sold
FLUVAL EDGE THERMOMETER EXTERNAL STICK ON DIGITAL AQUARIUM FISH TANK
Brand new · Fluval
(40)
£3.75
Free postage
2,791 sold
Thermometer Adhesive Sticker Black LCD Flat Strip Window Fish Tank Aquarium
Brand new
£2.15 to £11.95
Free postage
55 sold
DIGITAL AQUARIUM REPTILE VIVARIUM THERMOMETER WITH PROBE FREEZER UK SELLER
Brand new
£4.54
Free postage
2,261 sold
Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter
Brand new · Unbranded
£4.68
(£4.68/Unit)
Free postage
Aquarium Thermometer Glass Precise Fish Tank Temperature Submersible BT-02
Brand new · Unbranded
(19)
£2.49
Free postage
112 sold
LCD STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WINDOW STRIP B2G2
Brand new · Unbranded
£1.75
Free postage
3,448 sold
Oase Aquarium Digital Thermometer Temperature Gauge Easy LCD Display Fish Tank
Brand new · Oase
(48)
£9.75
Free postage
Click & Collect
1,009 sold
Marina Aquarium Thermometers Fish Tank Tropical Marine Temperature Checking
Brand new
(5)
£3.29 to £3.75
Free postage
278 sold
Aquarium pH Controller And Temp Macro Aqua
Pre-owned
£26.72
or Best Offer
£3.38 P&P
0 bids
1h 10m
Juwel Digital Thermometer 3.0 Easy Read Fresh/Marine Temp Aquarium Fish Tank
Brand new · Juwel
(2)
£22.45
Free postage
Click & Collect
107 sold
LCD AQUARIUM THERMOMETER FOR FISH TANK WATER FRIDGE FREEZER TEMPERATURE
Brand new
£3.29
Free postage
572 sold
Ista LCD Digital Aquarium Thermometer Submersible Temperature Thermometer
Brand new
£5.99
Free postage
Click & Collect
132 sold
LCD Digital Aquarium Thermometer – Accurate Water Temperature Monitor for Fish T
Brand new · Unbranded
£4.49 to £5.49
(£5.49/Unit)
Free postage
Ista Hang On Glass Thermometer Aquarium Fish Tank Temperature - Very Accurate
Brand new
£4.99 to £5.49
Free postage
127 sold
Aquatronica Aquarium Controller
Pre-owned
£363.72
or Best Offer
£8.41 P&P
GHL KH DIRECTOR + DOSER 2.1 STANDALONE
Pre-owned
£384.12
or Best Offer
£6.16 P&P
1/2/4PCS Digital Aquarium Fish Tank Thermometer Temperature Freezer Water Gauge
Brand new
£4.21 to £13.91
(£13.91/Unit)
Free postage
104 sold
Interpet Deltatherm Aquariums Heater 100w Fish Tank Tropical Brand New
Brand new · Interpet
£1.75
£3.45 P&P
1 bid
19h 51m
Bermuda Floating Pond Thermometer with Nylon Cord Accurate Temperature Fish Koi
Brand new · Bermuda
(29)
£8.45
Free postage
Click & Collect
1,056 sold
Fluval Digital Thermometer Submersible Aquarium Tropical Stick-On Suction Cup
Brand new · Fluval
(17)
£9.85
Free postage
Click & Collect
258 sold
LCD Digital Thermometer Aquarium Fish Tank Vivarium Water Marine Probe UK Seller
Brand new · Unbranded
£3.45
Free postage
Ista Mini Glass Thermometer Submersible Temperature Meter Nano Tank Aquarium
Brand new
£4.29
Free postage
124 sold
ORP PROBE WITH BNC CONNECTOR, REPLACEMENT, AQUARIUM, MARINE, REDOX, ELECTRODE UK
Brand new · Unbranded
£27.99
Free postage
Click & Collect
Only 2 left
TRIXES Digital LCD Thermometer NEW Fish Tank Aquarium Vivarium Marine Water
Brand new
(17)
£5.99
or Best Offer
Free postage
Click & Collect
903 sold
10 Stick On Thermometers Fish Tank Digital Temperature Display Strips Discs
Brand new · Unbranded
£6.49
Free postage
Aquarium Thermometer Meter Fish Tank Water Temperature With Suction Cup Glass UK
Brand new · Unbranded
£3.19
Free postage
85 sold
2X DIGITAL AQUARIUM REPTILE VIVARIUM THERMOMETER WITH PROBE FREEZER UK SELLER
Brand new
£6.45
Free postage
Click & Collect
1,268 sold
LCD Digital Thermometer Aquarium Fish Tank Vivarium Water Marine Probe UK Seller
Brand new
£3.49
Free postage
6,135 sold
Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller
Brand new · Unbranded
£3.36
Free postage
330 sold
AQUARIUM LCD DIGITAL THERMOMETER AQUARIUM, LARGE, TEMPERATURE, FISH TANK UK
Brand new · Unbranded
£10.99
Free postage
Click & Collect
Only 2 left
Waterproof Aquarium Thermometer LCD Digital Submersible Fish Tank Thermometer
Brand new · Unbranded
£3.95
or Best Offer
Free postage
148 sold
Reuben Heaton Fishing Standard Casting Water Thermometer + Case
Brand new
(7)
£20.99
Free postage
Click & Collect
434 sold
Reef Factory KH keeper
Pre-owned
£99.52
or Best Offer
£3.38 P&P
0 bids
21h 1m
AQUARIUM LCD DIGITAL STICK ON THERMOMETER FISH TANK ADHESIVE WINDOW WATER STRIP
Brand new
(13)
£3.45
Free postage
1,164 sold
1/2pcs Floating Aquarium Vertical Thermometer Fish Tank Glass Temperature Meter
Brand new · Unbranded
£3.10
Free postage
Xepta Auto Balance KH Keeper and Doser for Marine Fish Tanks
Pre-owned
£208.72
or Best Offer
£4.26 P&P
ITC PARwise PAR Light Meter Get Perfect Growth Rates Wavelength Aquarium Fish
Brand new · ITC Reefculture
£219.95
Free postage
Click & Collect
Only 3 left
Seneye Reef and Web Server & Probe
Pre-owned
£146.32
or Best Offer
£4.26 P&P
Tunze Aquarium Cabinet Controller Board Logo
Brand new
£8.50
Free postage
Click & Collect
Digital Aquarium Temperature Gauge Fish Tank Thermometer-9.9℃~99.9℃ UK SELLER
Brand new · Unbranded
£4.79
Free postage
489 sold
AQUARIUM DIGITAL THERMOMETER LCD, FISH TANK, CELSIUS FAHRENHEIT REEF MARINE POND
Brand new · Unbranded
£7.49
Free postage
Click & Collect
65 sold
Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter
Brand new · Unbranded
£4.99 to £5.99
Free postage
Twin Display External Thermometer Digital Thermometer For Aquarium Vivarium
Brand new
£8.99
Free postage
Click & Collect

Best selling

See all

2x LCD Digital Thermometer Aquarium Fish Tank Vivarium Marine Probe UK SELLER
(110)
£3.69 New
Fluval 11193 2 in 1 Digital Aquarium Thermometer - Black
(63)
£10.99 New
Superfish Glass Aquarium Thermometer Fish Tank
(15)
£3.69 New
ITC Reefculture PARwise Smart Submersible Quantum PAR Sensor
£219.95 New
£130.72 Used
Juwel Digital Thermometer 3.0 Large Display Aquarium Temperature Gauge
(2)
£22.40 New
Seneye Reef USB Aquarium Controller - White (SEN000048)
(4)
£160.91 New
£52.72 Used
seneye V2 SWS Web Server (non Wi-fi) Connect to Smartphone Ethernet SEN000235 UK
(1)
£164.97 New
$DD Aquarium Solutions ATC Seawater Refractometer - AQPR001$
DD Aquarium Solutions ATC Seawater Refractometer - AQPR001
(7)
£36.80 New
£17.35 Used

Top-rated

See all

2x LCD Digital Thermometer Aquarium Fish Tank Vivarium Marine Probe UK SELLER
(110)

96% agree - Would recommend
£3.69 New
Fluval 11193 2 in 1 Digital Aquarium Thermometer - Black
(63)

89% agree - Would recommend
£10.99 New
Betta RJ020 Glass Thermometer
(46)

86% agree - Would recommend
£3.99 New
Bermuda Floating Pond Thermometer - BER1051
(29)

100% agree - Would recommend
£8.45 New
Superfish Glass Aquarium Thermometer Fish Tank
(15)

100% agree - Would recommend
£3.69 New
$DD Aquarium Solutions ATC Seawater Refractometer - AQPR001$
DD Aquarium Solutions ATC Seawater Refractometer - AQPR001
(7)

100% agree - Would recommend
£36.80 New
£17.35 Used
Fluval Celcius Digital Aquarium Thermometer With Suction Cup
(17)

72% agree - Would recommend
£9.85 New
Interpet Easy Read Aquarium Thermometer 1509
(15)

57% agree - Would recommend
£6.30 New

Type

Measured/Controlled Parameter

Aquarium Meters & Controllers

Shop by category

5,783 results

Reef Factory KH Keeper Plus Aquarium Alkalinity Tester

Handheld Refractometer for Marine Aquarium Fish Tank Salinity Testing Salt Meter

Probe Tube Holder Hose, OHP, PH, Temperature - Aquarium Reef Marine

Solar LCD Digital Thermometer for Fish Tank Tropical Marine Aquarium

AQUARIUM THERMOMETER FOR FISH TANK BREW WINDOW LCD FLAT ADHESIVE STRIP [2/1]

Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller

GHL DOSER 2.1 SLAVE

STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WINDOW WATER STRIP *UK

Aquarium Fish Tank Temperature Thermometers Digital & Analogue Stick On °C & °F

Fish Tank Tropical Aquarium Thermometer Floating Tempered Glass Sucker Easy Read

Superfish Aquarium Thermometer Tropical Fish Tank Temperature Easy to Use

FLUVAL 2-in-1 DIGITAL THERMOMETER MEASURES WATER & ROOM TEMPERATURE AQUARIUM

Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller

Aquarium Fish Tank Gauge Touch Screen Digital Thermometer Temperature Sensor

Reef Factory KH Keeper Plus Aquarium Alkalinity Tester

Neptune Apex Trident Mini 3D Printed Casing

LCD DIGITAL THERMOMETER FOR FISH TANK WATER, FRIDGE FREEZER TEMPERATURE, 2 Meter

FLUVAL EDGE THERMOMETER EXTERNAL STICK ON DIGITAL AQUARIUM FISH TANK

Thermometer Adhesive Sticker Black LCD Flat Strip Window Fish Tank Aquarium

DIGITAL AQUARIUM REPTILE VIVARIUM THERMOMETER WITH PROBE FREEZER UK SELLER

Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter

Aquarium Thermometer Glass Precise Fish Tank Temperature Submersible BT-02

LCD STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WINDOW STRIP B2G2

Oase Aquarium Digital Thermometer Temperature Gauge Easy LCD Display Fish Tank

Marina Aquarium Thermometers Fish Tank Tropical Marine Temperature Checking

Aquarium pH Controller And Temp Macro Aqua

Juwel Digital Thermometer 3.0 Easy Read Fresh/Marine Temp Aquarium Fish Tank

LCD AQUARIUM THERMOMETER FOR FISH TANK WATER FRIDGE FREEZER TEMPERATURE

Ista LCD Digital Aquarium Thermometer Submersible Temperature Thermometer

LCD Digital Aquarium Thermometer – Accurate Water Temperature Monitor for Fish T

Ista Hang On Glass Thermometer Aquarium Fish Tank Temperature - Very Accurate

Aquatronica Aquarium Controller

GHL KH DIRECTOR + DOSER 2.1 STANDALONE

1/2/4PCS Digital Aquarium Fish Tank Thermometer Temperature Freezer Water Gauge

Interpet Deltatherm Aquariums Heater 100w Fish Tank Tropical Brand New

Bermuda Floating Pond Thermometer with Nylon Cord Accurate Temperature Fish Koi

Fluval Digital Thermometer Submersible Aquarium Tropical Stick-On Suction Cup

LCD Digital Thermometer Aquarium Fish Tank Vivarium Water Marine Probe UK Seller

Ista Mini Glass Thermometer Submersible Temperature Meter Nano Tank Aquarium

ORP PROBE WITH BNC CONNECTOR, REPLACEMENT, AQUARIUM, MARINE, REDOX, ELECTRODE UK

TRIXES Digital LCD Thermometer NEW Fish Tank Aquarium Vivarium Marine Water

10 Stick On Thermometers Fish Tank Digital Temperature Display Strips Discs

Aquarium Thermometer Meter Fish Tank Water Temperature With Suction Cup Glass UK

2X DIGITAL AQUARIUM REPTILE VIVARIUM THERMOMETER WITH PROBE FREEZER UK SELLER

LCD Digital Thermometer Aquarium Fish Tank Vivarium Water Marine Probe UK Seller

Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller

AQUARIUM LCD DIGITAL THERMOMETER AQUARIUM, LARGE, TEMPERATURE, FISH TANK UK

Waterproof Aquarium Thermometer LCD Digital Submersible Fish Tank Thermometer

Reuben Heaton Fishing Standard Casting Water Thermometer + Case

Reef Factory KH keeper

AQUARIUM LCD DIGITAL STICK ON THERMOMETER FISH TANK ADHESIVE WINDOW WATER STRIP

1/2pcs Floating Aquarium Vertical Thermometer Fish Tank Glass Temperature Meter

Xepta Auto Balance KH Keeper and Doser for Marine Fish Tanks

ITC PARwise PAR Light Meter Get Perfect Growth Rates Wavelength Aquarium Fish

Seneye Reef and Web Server & Probe

Tunze Aquarium Cabinet Controller Board Logo

Digital Aquarium Temperature Gauge Fish Tank Thermometer-9.9℃~99.9℃ UK SELLER

AQUARIUM DIGITAL THERMOMETER LCD, FISH TANK, CELSIUS FAHRENHEIT REEF MARINE POND

Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter

Twin Display External Thermometer Digital Thermometer For Aquarium Vivarium

Best selling

2x LCD Digital Thermometer Aquarium Fish Tank Vivarium Marine Probe UK SELLER

Fluval 11193 2 in 1 Digital Aquarium Thermometer - Black

Superfish Glass Aquarium Thermometer Fish Tank

ITC Reefculture PARwise Smart Submersible Quantum PAR Sensor

Juwel Digital Thermometer 3.0 Large Display Aquarium Temperature Gauge

Seneye Reef USB Aquarium Controller - White (SEN000048)

seneye V2 SWS Web Server (non Wi-fi) Connect to Smartphone Ethernet SEN000235 UK

DD Aquarium Solutions ATC Seawater Refractometer - AQPR001

Top-rated

2x LCD Digital Thermometer Aquarium Fish Tank Vivarium Marine Probe UK SELLER

Fluval 11193 2 in 1 Digital Aquarium Thermometer - Black

Betta RJ020 Glass Thermometer

Bermuda Floating Pond Thermometer - BER1051

Superfish Glass Aquarium Thermometer Fish Tank

DD Aquarium Solutions ATC Seawater Refractometer - AQPR001

Fluval Celcius Digital Aquarium Thermometer With Suction Cup