Aquarium Controllers for sale

Profilux Plus II controller with Salinity Card w/ Power Cord
Pre-Owned
C $275.44
Neptune Apex Breakout Box DC Jacks w/ 6 cable leads included Hidden Mounting
Brand New
C $49.57
or Best Offer
74 sold
Neptune System Dos Multi-Purpose Dosing Fluid Metering System Revision 1.1
Pre-Owned · Neptune
C $268.55
or Best Offer
2x Covered Toggle 4x Push switch Apex Neptune breakout box with 24VDC alarm.
Brand New
C $172.15
34 watching
Neptune Systems Apex Aquarium Controller Kit
Pre-Owned · Neptune Systems
C $156.31
C $55.89 shipping
6 bids
3d 6h
New ListingNeptune Systems 1LINK Power and Communication Module w/ Power Supply (PRE-OWNED)
Pre-Owned · Neptune Systems
C $172.15
or Best Offer
C $28.18 shipping
Only 1 left!
Milwaukee MC122 PRO pH Controller
Brand New · Milwaukee
(18)
C $276.34
C $37.39 shipping
Only 3 left
New ListingNeptune Systems - EB832 Energy Bar 832 (PRE-OWNED)
Pre-Owned · Neptune Systems
(2)
C $241.01
or Best Offer
C $63.42 shipping
Neptune Systems A3 Apex System
Brand New · Neptune Systems
C $867.62
C $53.97 shipping
Neptune systems energy bar 8 EB8 For Apex controller (Read Description)
Pre-Owned · Neptune Systems
C $151.48
3 watching
Milwaukee MC125 ORP/PH Dual Controller, 2 Probes Included, SMS125, Meter
Brand New
C $315.38
C $40.19 shipping
Only 3 left
Used Neptune Systems Apex Temperature Probe Temp
Pre-Owned · Neptune Systems
C $34.42
56 sold
New ListingNeptune Systems - Trident - Marine Aquarium Water Analyzer (PRE-OWNED)
Pre-Owned · Neptune Systems
C $619.74
or Best Offer
C $41.37 shipping
Customizable Apex Neptune Breakout Box 2x Lighted Toggle Switches Push Terminal
Brand New
C $103.28
or Best Offer
26 watching
Customizable Apex Neptune Breakout Box 6 switches Many Colors Available
Brand New
C $55.07
or Best Offer
Magnetic 4 Probe Holder 3 Standard 1 Enlarged for Apex Neptune Temperature Probe
Brand New
C $38.55
or Best Offer
146 sold
Milwaukee MC122 Pro pH Controller, 115V
Brand New · Milwaukee
(18)
C $201.00
385 sold
Osmolator 3 Automatic Water Top Off (ATO) 3154 - Tunze
Brand New · Tunze
(1)
C $344.29
C $63.72 shipping
10 watching
Focustronic Alkatronic Professional Pro Alkalinity Controller [ Brand New ]
Brand New
C $991.57
Was: C $1,101.75was - C $1,101.75
C $49.61 shipping
Focustronic Alkatronic Professional Pro Alkalinity Controller with Reagent
Pre-Owned
C $743.67
Was: C $826.31was - C $826.31
C $49.94 shipping
auto water filler, Top off system, aquarium ATO sytem, water level controller
Brand New
C $16.51
Free shipping
391 sold
Customizable Apex Neptune Breakout Box 4 switches 2 push release connectors
Brand New
C $55.07
or Best Offer
Mini Neptune Apex Controller Board BLACK - Adaptive Reef
Brand New · Neptune
C $158.36
C $31.90 shipping
52 watching
QUARIUM ORP Meter and Controller WEIPRO ORP - 3010, working with ozonizer
Brand New
C $220.34
Free shipping
57 sold
Neptune Systems - A3 Apex Pro Aquarium Controller System (PRE-OWNED)
Pre-Owned · Neptune Systems
C $964.04
or Best Offer
C $59.84 shipping
Neptune Systems Apex Classic Controller
Pre-Owned · Neptune Systems
C $110.16
16 watching
Neptune Apex Trident Water Analyzer not tested #3
Pre-Owned · Neptune Systems
C $165.26
2 bids
5d 14h
Neptune systems Apex Energy Bar 4 EB4 Power Strip For Apex controller FREE SHIP!
Brand New · Neptune Systems
C $165.25
or Best Offer
Neptune Apex Breakout Box Push Terminals Slim Design Hidden Mounting Bracket
Brand New
C $38.55
or Best Offer
Customizable Breakout Box 4x Lighted Toggle 2x Push Button for Apex Neptune
Brand New
C $130.82
or Best Offer
10 watching
DIY DC24 Male ONLY to bare wires 2 Pin Extension 5 foot for Neptune Systems Apex
Brand New
C $17.89
62 sold
Customizable Breakout Box 6x Lighted Toggle Apex Neptune
Brand New
C $158.36
or Best Offer
C $25.02 shipping
23 watching
Neptune Systems Apex PM1 pH/ORP Probe Module Black Label
Pre-Owned · Neptune Systems
C $96.39
C $22.72 shipping
Only 1 left!
Neptune Apex Trident Water Analyzer 2#
Pre-Owned · Neptune Systems
C $165.26
2 bids
5d 14h
Aquatic LIFE pH Controller Aquarium Sensor Unused Open Box
Brand New
C $116.36
or Best Offer
C $41.21 shipping
REEFER Skimmer 900 ReefRun DC Pump Upgrade Kit (Excl. controller) - Red Sea
Brand New · Red Sea
C $274.06
C $37.32 shipping
acryli made Liquid storage bucket 4 rooms 6 liters dosing pump Scale container
Brand New
C $82.62
C $13.77 shipping
54 sold
Milwaukee MC122 pH Controller w/probe
Brand New · Milwaukee
(18)
C $240.18
C $36.33 shipping
3 watching
Customizable Apex Neptune Breakout Box 2x Toggle Switches Push Terminal
Brand New
C $96.39
or Best Offer
Pearl Kogyo ZDK-916L2C-P Tuner Controller
Pre-Owned
C $618.36
or Best Offer
Used Neptune systems Apex energy bar 8 EB8 For (Read Description)
Pre-Owned · Neptune Systems
C $151.48
Customizable Apex Switch Panel Addon for Breakout Box Up to 6 Switches
Brand New
C $15.14 to C $45.43
C $16.14 shipping
Neptune Systems Flow Sensor - 1" with unions
Brand New · Neptune Systems
C $90.88
C $23.04 shipping
20 watching
Smart Temp Security - AutoAqua
Brand New
C $82.62
C $22.32 shipping
Neptune Systems MXM Module
Brand New · Neptune Systems
C $165.20
C $34.11 shipping
25 watching
BNC Connector Electrode PH Probe Sensor For Aquarium Lab PH Controller Meter New
Brand New · Unbranded
C $9.49
Was: C $10.32was - C $10.32
or Best Offer
C $6.20 shipping
140 sold
pH & ORP Redox Controller Water Quality Meter Tester Aquarium Hydroponics Tank
Brand New · Unbranded
C $222.97
or Best Offer
Free shipping
Only 1 left!
Milwaukee Instruments SMS122 PH Controller w/ PH Smart monitoring system
Pre-Owned
C $75.75
or Best Offer
6 watching
Aquarium Test Probe Holder for Apex Neptune Reef
Brand New
C $31.66
or Best Offer
122 sold
Aquarium tank Auto top off Water Filler, water level controller don't need power
Brand New
(2)
C $13.76
Free shipping
416 sold
Mini Neptune DOS Controller Board BLACK - Adaptive Reef
Brand New · Neptune
C $158.36
C $31.43 shipping
6 watching
Neptune Apex Display Module ADM Pre Owned
Pre-Owned · Neptune
C $136.27
or Best Offer
C $32.10 shipping
Milwaukee Instruments MC122 PH Meter Smart Monitoring System Controller
Brand New · Milwaukee
(18)
C $172.15
or Best Offer
13 watching
REEFER Skimmer 600 ReefRun DC Pump Upgrade Kit (Excl. controller) - Red Sea
Brand New · Red Sea
C $274.06
C $31.96 shipping
Hydor Smart Level Aquarium Tank Water Level Auto Controller WO895733
Brand New · Hydor
C $103.28
11 watching
Neptune Systems - ATK V2 Auto Top Off Kit (PRE-OWNED)
Pre-Owned · Neptune Systems
C $234.12
or Best Offer
C $29.53 shipping
12 watching
Neptune Systems I/O Breakout Box - Accessory for Apex Controller Blue
Pre-Owned · Neptune Systems
C $37.17
C $15.89 shipping
Mount for GHL Versia Controller - Stream or Flow by UNREEF
Brand New
C $22.02
Customizable 4x switch Apex Neptune breakout box with 24VDC alarm.
Brand New
C $123.93
14 watching
Hydor Koralia Wavemaker Basic Controller, Dual Pump, 12V, DC
Brand New · Hydor
C $110.16
or Best Offer

Aquarium Controllers

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474 results

Profilux Plus II controller with Salinity Card w/ Power Cord

Neptune Apex Breakout Box DC Jacks w/ 6 cable leads included Hidden Mounting

Neptune System Dos Multi-Purpose Dosing Fluid Metering System Revision 1.1

2x Covered Toggle 4x Push switch Apex Neptune breakout box with 24VDC alarm.

Neptune Systems Apex Aquarium Controller Kit

New ListingNeptune Systems 1LINK Power and Communication Module w/ Power Supply (PRE-OWNED)

Milwaukee MC122 PRO pH Controller

New ListingNeptune Systems - EB832 Energy Bar 832 (PRE-OWNED)

Neptune Systems A3 Apex System

Neptune systems energy bar 8 EB8 For Apex controller (Read Description)

Milwaukee MC125 ORP/PH Dual Controller, 2 Probes Included, SMS125, Meter

Used Neptune Systems Apex Temperature Probe Temp

New ListingNeptune Systems - Trident - Marine Aquarium Water Analyzer (PRE-OWNED)

Customizable Apex Neptune Breakout Box 2x Lighted Toggle Switches Push Terminal

Customizable Apex Neptune Breakout Box 6 switches Many Colors Available

Magnetic 4 Probe Holder 3 Standard 1 Enlarged for Apex Neptune Temperature Probe

Milwaukee MC122 Pro pH Controller, 115V

Osmolator 3 Automatic Water Top Off (ATO) 3154 - Tunze

Focustronic Alkatronic Professional Pro Alkalinity Controller [ Brand New ]

Focustronic Alkatronic Professional Pro Alkalinity Controller with Reagent

auto water filler, Top off system, aquarium ATO sytem, water level controller

Customizable Apex Neptune Breakout Box 4 switches 2 push release connectors

Mini Neptune Apex Controller Board BLACK - Adaptive Reef

QUARIUM ORP Meter and Controller WEIPRO ORP - 3010, working with ozonizer

Neptune Systems - A3 Apex Pro Aquarium Controller System (PRE-OWNED)

Neptune Systems Apex Classic Controller

Neptune Apex Trident Water Analyzer not tested #3

Neptune systems Apex Energy Bar 4 EB4 Power Strip For Apex controller FREE SHIP!

Neptune Apex Breakout Box Push Terminals Slim Design Hidden Mounting Bracket

Customizable Breakout Box 4x Lighted Toggle 2x Push Button for Apex Neptune

DIY DC24 Male ONLY to bare wires 2 Pin Extension 5 foot for Neptune Systems Apex

Customizable Breakout Box 6x Lighted Toggle Apex Neptune

Neptune Systems Apex PM1 pH/ORP Probe Module Black Label

Neptune Apex Trident Water Analyzer 2#

Aquatic LIFE pH Controller Aquarium Sensor Unused Open Box

REEFER Skimmer 900 ReefRun DC Pump Upgrade Kit (Excl. controller) - Red Sea

acryli made Liquid storage bucket 4 rooms 6 liters dosing pump Scale container

Milwaukee MC122 pH Controller w/probe

Customizable Apex Neptune Breakout Box 2x Toggle Switches Push Terminal

Pearl Kogyo ZDK-916L2C-P Tuner Controller

Used Neptune systems Apex energy bar 8 EB8 For (Read Description)

Customizable Apex Switch Panel Addon for Breakout Box Up to 6 Switches

Neptune Systems Flow Sensor - 1" with unions

Smart Temp Security - AutoAqua

Neptune Systems MXM Module

BNC Connector Electrode PH Probe Sensor For Aquarium Lab PH Controller Meter New

pH & ORP Redox Controller Water Quality Meter Tester Aquarium Hydroponics Tank

Milwaukee Instruments SMS122 PH Controller w/ PH Smart monitoring system

Aquarium Test Probe Holder for Apex Neptune Reef

Aquarium tank Auto top off Water Filler, water level controller don't need power

Mini Neptune DOS Controller Board BLACK - Adaptive Reef

Neptune Apex Display Module ADM Pre Owned

Milwaukee Instruments MC122 PH Meter Smart Monitoring System Controller

REEFER Skimmer 600 ReefRun DC Pump Upgrade Kit (Excl. controller) - Red Sea

Hydor Smart Level Aquarium Tank Water Level Auto Controller WO895733

Neptune Systems - ATK V2 Auto Top Off Kit (PRE-OWNED)

Neptune Systems I/O Breakout Box - Accessory for Apex Controller Blue

Mount for GHL Versia Controller - Stream or Flow by UNREEF

Customizable 4x switch Apex Neptune breakout box with 24VDC alarm.

Hydor Koralia Wavemaker Basic Controller, Dual Pump, 12V, DC