Aquarium Meters & Controllers

5,687 results

Reef Factory KH Keeper Plus Aquarium Alkalinity Tester
Pre-owned
£125.52
(£125.52/Unit)
or Best Offer
£4.26 P&P
Est. delivery Wed, Jul 9
Probe Tube Holder Hose, OHP, PH, Temperature - Aquarium Reef Marine
Brand new
£12.16 to £16.84
Free postage
Click & Collect
$Handheld Refractometer for Marine Aquarium Fish Tank Salinity Testing Salt Meter - Image 1 of 1$
Handheld Refractometer for Marine Aquarium Fish Tank Salinity Testing Salt Meter
Brand new
£19.99
Free postage
Click & Collect
338 sold
Reef Factory KH Keeper Plus Aquarium Alkalinity Tester
Brand new
£363.72
(£363.72/Unit)
or Best Offer
£12.47 P&P
10 watching
Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller
Brand new
(110)
£3.69
Free postage
Est. delivery Wed, Jul 9
4,465 sold
STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WINDOW WATER STRIP *UK
Brand new · Unbranded
£2.28 to £9.95
Free postage
Est. delivery Wed, Jul 9
1,161 sold
Aquarium Fish Tank Temperature Thermometers Digital & Analogue Stick On °C & °F
Brand new
£1.99 to £6.49
Free postage
Est. delivery Wed, Jul 9
840 sold
FLUVAL 2-in-1 DIGITAL THERMOMETER MEASURES WATER & ROOM TEMPERATURE AQUARIUM
Brand new · Fluval
(63)
£10.99
Free postage
Click & Collect
644 sold
Fish Tank Tropical Aquarium Thermometer Floating Tempered Glass Sucker Easy Read
Brand new
£3.29
Free postage
191 sold
Superfish Aquarium Thermometer Tropical Fish Tank Temperature Easy to Use
Brand new · Superfish
(15)
£3.75
Free postage
Est. delivery Wed, Jul 9
1,148 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 · Unbranded
£3.31
Free postage
54 sold
LCD DIGITAL THERMOMETER FOR FISH TANK WATER, FRIDGE FREEZER TEMPERATURE, 2 Meter
Brand new
£3.95
Free postage
Est. delivery Wed, Jul 9
256 sold
Aquarium Fish Tank Gauge Touch Screen Digital Thermometer Temperature Sensor
Brand new · Unbranded
£3.55 to £8.98
Free postage
Solar LCD Digital Thermometer for Fish Tank Tropical Marine Aquarium
Brand new
£12.99
Free postage
Click & Collect
51 sold
Ista Mini Glass Thermometer Submersible Temperature Meter Nano Tank Aquarium
Brand new
£4.29
Free postage
Est. delivery Wed, Jul 9
125 sold
Aquarium Thermometer Glass Precise Fish Tank Temperature Submersible BT-02
Brand new · Unbranded
(19)
£2.49
Free postage
Est. delivery Wed, Jul 9
115 sold
DIGITAL AQUARIUM REPTILE VIVARIUM THERMOMETER WITH PROBE FREEZER UK SELLER
Brand new
£4.54
Free postage
Est. delivery Wed, Jul 9
Only 3 left
Thermometer Adhesive Sticker Black LCD Flat Strip Window Fish Tank Aquarium
Brand new
£2.15 to £11.95
Free postage
55 sold
FLUVAL EDGE THERMOMETER EXTERNAL STICK ON DIGITAL AQUARIUM FISH TANK
Brand new · Fluval
(40)
£3.75
Free postage
Est. delivery Wed, Jul 9
2,791 sold
Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter
Brand new · Unbranded
£4.68
(£4.68/Unit)
Free postage
Est. delivery Wed, Jul 9
Oase Aquarium Digital Thermometer Temperature Gauge Easy LCD Display Fish Tank
Brand new · Oase
(48)
£9.75
Free postage
Click & Collect
1,009 sold
Aquarium stick on thermometer, Aquarium Temperature gauge
Brand new · Unbranded
£2.28
Free postage
Est. delivery Wed, Jul 9
LCD STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WINDOW STRIP B2G2
Brand new · Unbranded
£1.75
Free postage
3,449 sold
Marina Aquarium Thermometers Fish Tank Tropical Marine Temperature Checking
Brand new
(5)
£3.29 to £3.75
Free postage
Est. delivery Wed, Jul 9
278 sold
Bermuda Floating Pond Thermometer with Nylon Cord Accurate Temperature Fish Koi
Brand new · Bermuda
(29)
£8.45
Free postage
Click & Collect
1,057 sold
Fluval Digital Thermometer Submersible Aquarium Tropical Stick-On Suction Cup
Brand new · Fluval
(17)
£9.85
Free postage
Click & Collect
259 sold
1/2/4PCS Digital Aquarium Fish Tank Thermometer Temperature Freezer Water Gauge
Brand new
£4.21 to £13.91
(£13.91/Unit)
Free postage
Est. delivery Wed, Jul 9
104 sold
Neptune Apex Trident Mini 3D Printed Casing
Brand new
£50.00
Free postage
Click & Collect
ORP PROBE WITH BNC CONNECTOR, REPLACEMENT, AQUARIUM, MARINE, REDOX, ELECTRODE UK
Brand new · Unbranded
£27.99
Free postage
Click & Collect
Only 2 left
5 x LCD Thermometer Temperature Adhesive Sticker Sticky Strip Aquarium Fish Tank
Brand new · Unbranded
£4.99
Free postage
Est. delivery Wed, Jul 9
271 sold
Aquarium Thermometer Digital Fish Tank Thermometer Wireless Accurate Temperature
Brand new · Unbranded
£8.15 to £8.51
£3.59 P&P
Est. delivery Wed, Jul 9
GHL DOSER 2.1 SLAVE
Pre-owned
£151.52
or Best Offer
£3.94 P&P
Est. delivery Wed, Jul 9
LCD Digital Thermometer Aquarium Fish Tank Vivarium Water Marine Probe UK Seller
Brand new
£3.49
Free postage
Est. delivery Wed, Jul 9
6,135 sold
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 Digital Thermometer Aquarium Fish Tank Vivarium Water Marine Probe UK Seller
Brand new · Unbranded
£3.45
Free postage
Est. delivery Wed, Jul 9
3 x LCD Thermometer Adhesive Sticker Temperature Gauge Aquarium Window Fish Tank
Brand new · Unbranded
£3.49
Free postage
Est. delivery Wed, Jul 9
1,496 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
Twin Display External Thermometer Digital Thermometer For Aquarium Vivarium
Brand new
£8.99
Free postage
Click & Collect
New listingNeptune Systems Apex Trident Water Analyzer for Marine Reef Tank Aquarium
New (other)
£312.72
£4.26 P&P
Est. delivery Wed, Jul 9
0 bids
4d 4h
GHL KH DIRECTOR + DOSER 2.1 STANDALONE
Pre-owned
£384.12
or Best Offer
£6.16 P&P
Est. delivery Wed, Jul 9
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
LCD AQUARIUM THERMOMETER FOR FISH TANK WATER FRIDGE FREEZER TEMPERATURE
Brand new
£3.29
Free postage
Est. delivery Wed, Jul 9
572 sold
Ista Hang On Glass Thermometer Aquarium Fish Tank Temperature - Very Accurate
Brand new
£4.99 to £5.49
Free postage
Est. delivery Wed, Jul 9
127 sold
AQUARIUM LCD DIGITAL STICK ON THERMOMETER FISH TANK ADHESIVE WINDOW WATER STRIP
Brand new
(13)
£3.45
Free postage
Est. delivery Wed, Jul 9
1,165 sold
Xepta Auto Balance KH Keeper and Doser for Marine Fish Tanks
Pre-owned
£208.72
or Best Offer
£4.26 P&P
Est. delivery Wed, Jul 9
Juwel Digital Thermometer 3.0 Aquarium Fish Tank LED Display Temperature
Brand new · Juwel
(2)
£22.40
Free postage
Click & Collect
1/2pcs Floating Aquarium Vertical Thermometer Fish Tank Glass Temperature Meter
Brand new · Unbranded
£3.10
Free postage
2X DIGITAL AQUARIUM REPTILE VIVARIUM THERMOMETER WITH PROBE FREEZER UK SELLER
Brand new
£6.45
Free postage
Click & Collect
1,268 sold
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
10 Stick On Thermometers Fish Tank Digital Temperature Display Strips Discs
Brand new · Unbranded
£6.49
Free postage
Est. delivery Wed, Jul 9
Aquarium Thermometer Meter Fish Tank Water Temperature With Suction Cup Glass UK
Brand new · Unbranded
£3.19
Free postage
85 sold
Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller
Brand new · Unbranded
£3.36
Free postage
332 sold
D-D aquarium dual heating cooling temperature thermostat controller MOUNT ONLY
Brand new
£7.69
or Best Offer
£1.50 P&P
Click & Collect
116 sold
STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WATER STRIP LCD
Brand new
£1.69 to £6.75
Free postage
591 sold
AQUARIUM LCD DIGITAL THERMOMETER AQUARIUM, LARGE, TEMPERATURE, FISH TANK UK
Brand new · Unbranded
£10.99
Free postage
Click & Collect
Only 2 left
Reuben Heaton Fishing Standard Casting Water Thermometer + Case
Brand new
(7)
£20.99
Free postage
Click & Collect
434 sold
Aquatronica Aquarium Controller
Pre-owned
£363.72
or Best Offer
£8.41 P&P
Est. delivery Wed, Jul 9
Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter
Brand new · Unbranded
£4.99 to £5.99
Free postage
Est. delivery Wed, Jul 9

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
Hagen Fluval Edge Digital Aquarium Thermometer #11206
(40)
£3.75 New

Top-rated

See all

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

96% agree - Would recommend
£3.69 New
Digiflex Digital LCD Fish Aquarium Marine Vivarium Thermometer UK
(17)

87% agree - Would recommend
£1.99 New
Fluval 11193 2 in 1 Digital Aquarium Thermometer - Black
(63)

89% agree - Would recommend
£10.99 New
Oase Digital Aquarium Thermometer - Grey (43957)
(48)

92% agree - Would recommend
£9.75 New
Betta RJ020 Glass Thermometer
(46)

86% agree - Would recommend
£3.99 New
Hagen Fluval Edge Digital Aquarium Thermometer #11206
(40)

88% agree - Would recommend
£3.75 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

Type

Measured/Controlled Parameter

Aquarium Meters & Controllers

Shop by category

5,687 results

Reef Factory KH Keeper Plus Aquarium Alkalinity Tester

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

Handheld Refractometer for Marine Aquarium Fish Tank Salinity Testing Salt Meter

Reef Factory KH Keeper Plus Aquarium Alkalinity Tester

Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller

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

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

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

Fish Tank Tropical Aquarium Thermometer Floating Tempered Glass Sucker Easy Read

Superfish Aquarium Thermometer Tropical Fish Tank Temperature Easy to Use

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

Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller

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

Aquarium Fish Tank Gauge Touch Screen Digital Thermometer Temperature Sensor

Solar LCD Digital Thermometer for Fish Tank Tropical Marine Aquarium

Ista Mini Glass Thermometer Submersible Temperature Meter Nano Tank Aquarium

Aquarium Thermometer Glass Precise Fish Tank Temperature Submersible BT-02

DIGITAL AQUARIUM REPTILE VIVARIUM THERMOMETER WITH PROBE FREEZER UK SELLER

Thermometer Adhesive Sticker Black LCD Flat Strip Window Fish Tank Aquarium

FLUVAL EDGE THERMOMETER EXTERNAL STICK ON DIGITAL AQUARIUM FISH TANK

Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter

Oase Aquarium Digital Thermometer Temperature Gauge Easy LCD Display Fish Tank

Aquarium stick on thermometer, Aquarium Temperature gauge

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

Marina Aquarium Thermometers Fish Tank Tropical Marine Temperature Checking

Bermuda Floating Pond Thermometer with Nylon Cord Accurate Temperature Fish Koi

Fluval Digital Thermometer Submersible Aquarium Tropical Stick-On Suction Cup

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

Neptune Apex Trident Mini 3D Printed Casing

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

5 x LCD Thermometer Temperature Adhesive Sticker Sticky Strip Aquarium Fish Tank

Aquarium Thermometer Digital Fish Tank Thermometer Wireless Accurate Temperature

GHL DOSER 2.1 SLAVE

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

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

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

3 x LCD Thermometer Adhesive Sticker Temperature Gauge Aquarium Window Fish Tank

Ista LCD Digital Aquarium Thermometer Submersible Temperature Thermometer

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

Twin Display External Thermometer Digital Thermometer For Aquarium Vivarium

New listingNeptune Systems Apex Trident Water Analyzer for Marine Reef Tank Aquarium

GHL KH DIRECTOR + DOSER 2.1 STANDALONE

TRIXES Digital LCD Thermometer NEW Fish Tank Aquarium Vivarium Marine Water

LCD AQUARIUM THERMOMETER FOR FISH TANK WATER FRIDGE FREEZER TEMPERATURE

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

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

Xepta Auto Balance KH Keeper and Doser for Marine Fish Tanks

Juwel Digital Thermometer 3.0 Aquarium Fish Tank LED Display Temperature

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

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

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

10 Stick On Thermometers Fish Tank Digital Temperature Display Strips Discs

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

Digital LCD Thermometer Aquarium Fish Tank Vivarium Water UK Seller

D-D aquarium dual heating cooling temperature thermostat controller MOUNT ONLY

STICK ON DIGITAL THERMOMETER ADHESIVE AQUARIUM FISH TANK WATER STRIP LCD

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

Reuben Heaton Fishing Standard Casting Water Thermometer + Case

Aquatronica Aquarium Controller

Digital Water Aquarium Thermometer LCD Fish Tank Electronic Reptile Gauge Meter

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

Hagen Fluval Edge Digital Aquarium Thermometer #11206

Top-rated

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

Digiflex Digital LCD Fish Aquarium Marine Vivarium Thermometer UK

Fluval 11193 2 in 1 Digital Aquarium Thermometer - Black

Oase Digital Aquarium Thermometer - Grey (43957)

Betta RJ020 Glass Thermometer

Hagen Fluval Edge Digital Aquarium Thermometer #11206

Bermuda Floating Pond Thermometer - BER1051