Aquarium Controllers for sale

492 Results

New ListingHydros Control X4 / XP8 PRO Pack Reef Aquarium Controller Reef Tank OPEN BOX!
Pre-Owned
$639.95
or Best Offer
$12.14 shipping
+^E &*3 R]2 IA UwS .?!|/ $S p o n s o r e d
Complete Apex Controller System Lot Plus Trident, ATO, FMM, Auto Feeder, 3 eb8
Pre-Owned
$355.00
$17.48 shipping
18 bids
12h 27m
0+^ &O* ] YwT .?!PF|/ $0DS p o n s o r e d
Neptune Apex Breakout Box DC Jacks w/ 6 cable leads included Hidden Mounting
Brand New
$30.59
Was: $35.99was - US $35.99
or Best Offer
Free shipping
68 sold
+B^ 7&* ] Ew.H?! |/DO $ S p o n s o r e d
Auto Top Off ATO - Reef Breeders
Pre-Owned
(2)
$45.00
Free shipping
23 sold
NG+^ OL Q&A* V] w9 2.?!|/5 $S p o n s o r e d
Neptune Systems Apex A2 Eb832, Probes read description
Pre-Owned · Neptune Systems
$350.00
$22.65 shipping
23 bids
1h 44m
+8^ &R* R1] w. ?!S7 E|/ F $
Neptune Systems Apex Lab Grade Ph And Orp Probe Mfg 2018
Pre-Owned · Neptune Systems
$69.99
Free shipping
9 watching
+P^0 B &* H ] 89 w.0?!|T/ $
Neptune Apex DOS Dosing System (Reef Aquarium Dosing Pumps) and reservoir system
Pre-Owned · Neptune
$212.50
Was: $250.00was - US $250.00
or Best Offer
$15.00 shipping
18 watching
+IN^ 3 5 &AQ* ] wJ.?3 W!R| / $
New ListingNeptune Systems Apex Classic Pro Aquarium Controller System (Wifi)
Pre-Owned · Neptune Systems
$580.00
or Best Offer
$17.59 shipping
+K^ &*N Z 8] IFw.? !|/ $
Neptune Apex DOS Dosing System (Reef Aquarium Dosing Pumps)
Pre-Owned · Neptune
$195.00
or Best Offer
$9.00 shipping
+HE^ 2&*U ] w0.9?!| D/ $K
Hydros Control X4 / XP8 PRO Pack Reef Aquarium Controller Reef Tank NIB
Brand New
$699.95
or Best Offer
$12.14 shipping
R0+ 3D ^2 Y Q6 &5* 2] w. ?!|/ $
Neptune Systems APEX Display Module
Pre-Owned · Neptune
$74.99
Free shipping
Only 1 left!
LB+ ^ 1&P A*G ] w.C?M !K|9/ $
Neptune Systems Apex Classic Controller
Pre-Owned · Neptune Systems
$74.99
Free shipping
Only 1 left!
1+K^ &* ]E w2 P.?D! A8 |/Y $
Neptune Systems APEX A3 Pro New Sealed In Box
Brand New · Neptune Systems
$844.99
Free shipping
+TZ^ &* ] 9 Mw.? !|3/W $ 7
Milwaukee Instruments MC122 Multifunction pH controller
Brand New · Milwaukee
(18)
$99.99
Trending at $123.75
Free shipping
S+T^ &D* ]D w. C?!|/W S3$ S p o n s o r e d
Magnetic 4 Probe Holder 3 Standard 1 Enlarged for Apex Neptune Temperature Probe
Brand New
$23.79
Was: $27.99was - US $27.99
or Best Offer
Free shipping
142 sold
M+E^ & 7* D A] w.?!|V / 23 S$S p o n s o r e d
RLE TECHNOLOGIES LD2100 LEAK DETECTION CONTROLLER MONITORING
Pre-Owned
$1,050.00
or Best Offer
Free shipping
+V2^ H3&* U] w.?!I|/ $S p o n s o r e d
Used Neptune Systems Apex Lab Grade Ph Probe Double Junction
Pre-Owned · Neptune Systems
$49.99
Free shipping
J9+^ 63 &*U ] 9w .R?!2| / $
Coralvue HYDROS Control X10 Controller & Dosing System New NIB
Brand New
$789.95
or Best Offer
$11.88 shipping
V+^ P& *U Z] wX.?T!|/ AJ $
Tunze Osmolator Nano 3152 Auto Top Off - No Pump - Please Read - Nice!!!!!!
Pre-Owned · Tunze
$29.99
or Best Offer
$9.99 shipping
Only 1 left!
+^S 3 &* 7J] 4M QWw.?!|/ $
Used Neptune systems Apex energy bar 8 EB8 For (Read Description)
Pre-Owned · Neptune Systems
$99.99
Free shipping
+T^ &5* A2 A5] w .?!|/SO $
Osmolator Nano 3152 Auto Top Off - Tunze
Brand New · Tunze
$97.99
Free shipping
7 watching
95 +I^U &*D G 0]N wO5. ?!|/ $
GHL Profilux 4 Aquarium Controller.
Pre-Owned
$360.00
or Best Offer
Free shipping
+R^Z &*43 Y ]X w9.?!X| /SX $
Coralvue HYDROS Wave Engine v2 Pump Controller New NIB
Brand New
$319.95
or Best Offer
$9.64 shipping
+^ 3&* L ]V wJ. XU?! R|/Y $
Neptune Systems A3 Apex Junior
Brand New · Neptune Systems
$299.99
Free shipping
8 watching
S2 K+^ &K 0* ] w.N ?!|1/ C$
Milwaukee Instruments SMS122 PH Controller w/ PH Smart monitoring system
Pre-Owned
$64.99
Free shipping
39+ ^CB &*ZQ 1 ]T wC.?!|N / $
LOOP Mini Bluetooth Controller w/ Battery Backup (1695) - Current USA
Brand New · Current-USA
(2)
$56.95
Free shipping
+^ &P7* N] Aw .?!|/ $KZ
Milwaukee MC122 PRO pH Controller
Brand New · Milwaukee
(18)
$148.99
Free shipping
4+S ^ &* ] 5w.?!D D|7/ $ D
New BRS Ph Probe For Neptune Systems Apex Lab Grade Double Junction Reef Tank
Brand New · Neptune Systems
$70.00
$7.10 shipping
+^ &* ] wL6 C.D?! |Q/ P$ 52
Customizable Apex Neptune Breakout Box 2x Lighted Toggle Switches Push Terminal
Brand New
$63.74
Was: $74.99was - US $74.99
or Best Offer
Free shipping
26 watching
+9H^ &* ] S3 w.09?!|/ $XCS p o n s o r e d
2x Covered Toggle 4x Push switch Apex Neptune breakout box with 24VDC alarm.
Brand New
$106.25
Was: $125.00was - US $125.00
Free shipping
29 watching
+2G^ &* F D] w3.?!|G 4B/ $S p o n s o r e d
EXO Auto Top Off ATO - Reef Breeders
Brand New
(2)
$49.99
$7.67 shipping
+^K &6* F6] w.? !J|5 / $0RS p o n s o r e d
Customizable Breakout Box 4x Lighted Toggle 2x Push Button for Apex Neptune
Brand New
$80.74
Was: $94.99was - US $94.99
or Best Offer
Free shipping
8 watching
+MQ^ &* ] AI w.PJ?!|/ $NS p o n s o r e d
Neptune Systems APEX ALD Module Leak Detector With 4 Probes
Pre-Owned · Neptune
$79.99
Free shipping
+W^G &T*L 1 ] w.5 ?Y!G N|/ $
Used Neptune Systems Apex Temperature Probe Temp
Pre-Owned · Neptune Systems
$24.99
Free shipping
43 sold
+^ZG FN 5&F* ] w.NB 3?!|/ $
Neptune Apex Breakout Box w/ Push Terminals custom 2 switch panel choose from 3
Brand New
$29.74
Was: $34.99was - US $34.99
or Best Offer
Free shipping
+I^4 &* ] w1P.? AQ!|/ $L
NEW Tunze Osmolator 3155 Water Level Controller Auto Top Off
Brand New · Tunze
(1)
$219.95
or Best Offer
$11.95 shipping
R8 +0M^ & *U C ]3G w.?! |/D $
Venue Tetra Control Intuitive Lighting DMX Controller & Footswitch Black
Pre-Owned · Tétra
$82.00
Free shipping
+5I ^A Q& B*6 ] w .?!4|M/ $
Aquarium tank Auto top off Water Filler, water level controller don't need power
Brand New
(3)
$9.99
Free shipping
401 sold
+^ &5* ]2 w .0?H !|4/5 $
Customizable Apex Neptune Breakout Box 2x Toggle Switches Push Terminal
Brand New
$59.49
Was: $69.99was - US $69.99
or Best Offer
Free shipping
+^ 6B &* I] 7w.? 2B F6 !|/D $S p o n s o r e d
Customizable Breakout Box 6x Lighted Toggle Apex Neptune
Brand New
$97.74
Was: $114.99was - US $114.99
or Best Offer
Free shipping
19 watching
+V^E &* ] w.?GX! 3|/R $S p o n s o r e d
Profilux Mini WiFi-Set Aquarium computer Set/Aquarium Controller * New/READ *
Brand New
$149.99
$17.95 shipping
10 watching
+^Z V& KE OU * ] wJP. ?!|/ $
Neptune Apex DOS Dosing System New In Box
Brand New · Neptune
$299.99
or Best Offer
$15.43 shipping
+Z^9 &*1L ON P] w.?!0|/ $
KH Controller
Brand New
$619.00
or Best Offer
$60.00 shipping
N+M VF^ &* ] w.6B?! Q|A/ $
Neptune Systems Apex DC24 Male to Female 2 Pin Extension Cable 10 foot
Pre-Owned · Neptune Systems
$17.49
Free shipping
4 watching
+^R3 & R* V] Ew.E ?!EE |/G $
JBJ ATO Automatic Top Off Replacement Float Sensor Switch Fish Tank
Brand New · JBJ
$26.59
Was: $39.99was - US $39.99
Free shipping
K+^D &0* I] w 1.C?!|/ $4S
Neptune Systems Apex PM1 pH/ORP Probe Module Orange Label
Pre-Owned · Neptune Systems
$74.99
Free shipping
+G^ &P X* C] w.?!| 3N/ $X
Neptune Systems MXM Module
Brand New · Neptune Systems
$119.95
Free shipping
19 watching
+^GN &8J 1* ]O Aw.?!|Q/ CR $
WiFi 2 in 1 Digital Salinity & PH Meter Salinity & PH Monitor for Aquarium
Brand New · Unbranded
$121.95
or Best Offer
Free shipping
Z2 4G+^ &3* ] w.J? !E|1 E/A $
Osmolator Nano 3152 Auto Top Off - Tunze
INCLUDES EVERYTHING NEEDED TO RUN AN AUTO TOP OFF
Brand New · Tunze
$114.99
Free shipping
176 sold
9+^ &Q *Q8 L] 3w .?!|/ $06
Used Neptune Systems Apex PM3 Module Dissolved Oxygen Module
Pre-Owned · Neptune Systems
$59.99
Free shipping
Only 1 left!
+9J^ JA&* M] 8 wL.S?! F|S / $
Neptune Systems Apex VDM Module LED & Pump Control.
Pre-Owned · Neptune Systems
$74.99
Free shipping
Only 1 left!
MH +^ 8&4 *I ] wS O.?!|/ $3
Neptune Systems Apex Unit + Energy Bar + Temp Probe - All tested and working
Pre-Owned · Neptune Systems
$425.00
or Best Offer
$37.00 shipping
13 watching
+3N^ RV 3&*K ] w .?B3!| T1 / $
Hanna Instruments pH, Salinity, and Temperature Monitor - HI981520
Pre-Owned
$225.00
or Best Offer
$6.36 shipping
+6^7 L0&* ]H wJ.?!|/ M $7
Customizable Apex Neptune Breakout Box 6 switches Many Colors Available
Brand New
$33.99
Was: $39.99was - US $39.99
or Best Offer
Free shipping
O+^ &3 * ]8R NSw.?! S4| RG / $
Hanna Instruments pH, Salinity, and Temperature Monitor - HI981520
Brand New
$299.99
Free shipping
QK +^8 Q&* ] w.?!|/ $FU
Aquarium Test Probe Holder for Apex Neptune Reef
Brand New
$22.99
or Best Offer
$6.36 shipping
L+^O V X& W*M Z] Mw. N?!1|/ $
CoralVue Hydros Kraken 24V Power Center NIB
Brand New
$589.95
or Best Offer
$11.44 shipping
1+W^ 45 1&* 0 62] wO.?!|P/ $
Neptune Systems - LSM Lunar Simulator Module - Classic (PRE-OWNED)
Pre-Owned · Neptune Systems
$49.99
or Best Offer
Free shipping
+^BR P &L * ] wK7.?! |8Y /C $
Auto Top Off Dual Float Switch Sensor ATO Water Level Controller 4 Reef Aquarium
Brand New
$44.99
Free shipping
45 sold
+^OW &* ]5L YwW. ?8!|/J $ S p o n s o r e d
Adaptive Reef 6 Way Apex Switch Toggle Box
Pre-Owned
$79.00
or Best Offer
$6.29 shipping
0 bids
3d 13h
LA+^ &* QQ] wEU. ?!|/ $KS p o n s o r e d

Best Selling

See All

Milwaukee 716690 PH Controller
(18)
$99.99 New
$60.00 Used
Replacement Pump And Hose For Useek AT-200 Auto Top Off ATO System - Pump Only
$39.99 New
Neptune Systems Aquabus 15 Foot Cable
(1)
$21.95 New
Hydor Smart Level Controller Automatic Top off ATO
(1)
$90.98 New
Marineland Aqua-reminder Programmable Aquarium Service Alert PA0162
(1)

Brand

Water Type

Aquarium Controllers

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492 Results

New ListingHydros Control X4 / XP8 PRO Pack Reef Aquarium Controller Reef Tank OPEN BOX!

Complete Apex Controller System Lot Plus Trident, ATO, FMM, Auto Feeder, 3 eb8

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

Auto Top Off ATO - Reef Breeders

Neptune Systems Apex A2 Eb832, Probes read description

Neptune Systems Apex Lab Grade Ph And Orp Probe Mfg 2018

Neptune Apex DOS Dosing System (Reef Aquarium Dosing Pumps) and reservoir system

New ListingNeptune Systems Apex Classic Pro Aquarium Controller System (Wifi)

Neptune Apex DOS Dosing System (Reef Aquarium Dosing Pumps)

Hydros Control X4 / XP8 PRO Pack Reef Aquarium Controller Reef Tank NIB

Neptune Systems APEX Display Module

Neptune Systems Apex Classic Controller

Neptune Systems APEX A3 Pro New Sealed In Box

Milwaukee Instruments MC122 Multifunction pH controller

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

RLE TECHNOLOGIES LD2100 LEAK DETECTION CONTROLLER MONITORING

Used Neptune Systems Apex Lab Grade Ph Probe Double Junction

Coralvue HYDROS Control X10 Controller & Dosing System New NIB

Tunze Osmolator Nano 3152 Auto Top Off - No Pump - Please Read - Nice!!!!!!

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

Osmolator Nano 3152 Auto Top Off - Tunze

GHL Profilux 4 Aquarium Controller.

Coralvue HYDROS Wave Engine v2 Pump Controller New NIB

Neptune Systems A3 Apex Junior

Milwaukee Instruments SMS122 PH Controller w/ PH Smart monitoring system

LOOP Mini Bluetooth Controller w/ Battery Backup (1695) - Current USA

Milwaukee MC122 PRO pH Controller

New BRS Ph Probe For Neptune Systems Apex Lab Grade Double Junction Reef Tank

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

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

EXO Auto Top Off ATO - Reef Breeders

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

Neptune Systems APEX ALD Module Leak Detector With 4 Probes

Used Neptune Systems Apex Temperature Probe Temp

Neptune Apex Breakout Box w/ Push Terminals custom 2 switch panel choose from 3

NEW Tunze Osmolator 3155 Water Level Controller Auto Top Off

Venue Tetra Control Intuitive Lighting DMX Controller & Footswitch Black

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

Customizable Apex Neptune Breakout Box 2x Toggle Switches Push Terminal

Customizable Breakout Box 6x Lighted Toggle Apex Neptune

Profilux Mini WiFi-Set Aquarium computer Set/Aquarium Controller * New/READ *

Neptune Apex DOS Dosing System New In Box

KH Controller

Neptune Systems Apex DC24 Male to Female 2 Pin Extension Cable 10 foot

JBJ ATO Automatic Top Off Replacement Float Sensor Switch Fish Tank

Neptune Systems Apex PM1 pH/ORP Probe Module Orange Label

Neptune Systems MXM Module

WiFi 2 in 1 Digital Salinity & PH Meter Salinity & PH Monitor for Aquarium

Osmolator Nano 3152 Auto Top Off - Tunze

Used Neptune Systems Apex PM3 Module Dissolved Oxygen Module

Neptune Systems Apex VDM Module LED & Pump Control.

Neptune Systems Apex Unit + Energy Bar + Temp Probe - All tested and working

Hanna Instruments pH, Salinity, and Temperature Monitor - HI981520

Customizable Apex Neptune Breakout Box 6 switches Many Colors Available

Hanna Instruments pH, Salinity, and Temperature Monitor - HI981520

Aquarium Test Probe Holder for Apex Neptune Reef

CoralVue Hydros Kraken 24V Power Center NIB

Neptune Systems - LSM Lunar Simulator Module - Classic (PRE-OWNED)

Auto Top Off Dual Float Switch Sensor ATO Water Level Controller 4 Reef Aquarium

Adaptive Reef 6 Way Apex Switch Toggle Box

Best Selling

Milwaukee 716690 PH Controller

Replacement Pump And Hose For Useek AT-200 Auto Top Off ATO System - Pump Only

Neptune Systems Aquabus 15 Foot Cable

Hydor Smart Level Controller Automatic Top off ATO

Marineland Aqua-reminder Programmable Aquarium Service Alert PA0162

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