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Controllers & Testing
Controllers & Monitors

Controllers & Monitors

45 Reviews

Neptune Systems
A3 Apex Pro Aquarium Controller System
$804.09 $945.99
28 Reviews

Neptune Systems
A3 Apex Aquarium Controller System
$535.49 $629.99
16 Reviews

Neptune Systems
A3 Apex Jr Aquarium Controller System
$254.96 $299.95
79 Reviews

Neptune Systems
MPR Magnetic Probe Rack
$38.21 $44.95
79 Reviews

Neptune Systems
Trident - Marine Aquarium Water Analyzer
$573.74 $674.99
1 Review

Neptune Systems
2-Month Trident Reagent Kit
$42.49 $49.99
18 Reviews

Neptune Systems
6-Month Trident Reagent Kit
$93.49 $109.99
12 Reviews

Neptune Systems
Trident & A3 Apex Pro Aquarium Controller System Bundle
$1,377.83 $1,620.98

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1 Review

Neptune Systems
Trident & A3 Apex Aquarium Controller System Bundle
$1,109.23 $1,304.98

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67 Reviews

Neptune Systems
EB832 Energy Bar 832
$259.24 $304.99
4 Reviews

Neptune Systems
Trident NP Nitrate & Phosphate Tester w/ 2 Month Reagent Kit
$709.98 $709.98

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Neptune Systems
2-Month Trident NP Reagent Kit
$50.99 $59.99
Neptune Systems
Trident NP Waste Container
$2.97 $3.49
Neptune Systems
Trident NP Nitrate & Phosphate Tester (Without Reagents)
$649.99 $649.99
3 Reviews

Neptune Systems
DOS QuietDrive Dosing Pump
$297.49 $349.99
71 Reviews

Neptune Systems
DOS Dosing and Fluid Metering System
$279.99 $349.99
8 Reviews

Neptune Systems
A3 Apex Pro Aquarium Controller System with Extra Energy Bar 832
$1,063.33 $1,250.98

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2 Reviews

Neptune Systems
A3 Apex Aquarium Controller System with Extra Energy Bar 832
$794.73 $934.98

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17 Reviews

Focustronic
Mastertronic Automated Water Tester
$1,039.99 $1,299.99
Focustronic
Alkatronic Pro Alkalinity Controller
$719.99 $899.99
9 Reviews

Focustronic
Alkatronic Alkalinity Controller
$791.99 $989.99
Focustronic
Alkatronic Reagent (4L)
$88.00 $110.00
14 Reviews

Neptune Systems
Apex Display Module
$98.59 $115.99
2 Reviews

Adaptive Reef
Apex Controller Toggle Box
$107.99 $134.99
18 Reviews

Neptune Systems
MXM Mobius Wireless Control Module
$101.96 $119.95
15 Reviews

Neptune Systems
FMK Flow Monitoring Kit
$186.99 $219.99
4 Reviews

Neptune Systems
FMM Fluid Monitoring Module
$93.49 $109.99
1 Review

Neptune Systems
LD-1 Low Profile Leak Detection Probe
$29.74 $34.99
1 Review

Neptune Systems
LD-2 Solid Surface Leak Detection Probe
$29.74 $34.99
8 Reviews

Neptune Systems
MOS Magnetic Optical Sensor
$35.69 $41.99
19 Reviews

Neptune Systems
OS-1 Optical Level Sensor V2
$25.49 $29.99
29 Reviews

Neptune Systems
LLS Liquid Level Sensor
From: $40.79

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Neptune Systems
1/4" Flow Sensor FS25
$18.69 $21.99
3 Reviews

Neptune Systems
1/2" Flow Sensor FS50
$29.74 $34.99
19 Reviews

Neptune Systems
1" Flow Sensor FS100
$56.09 $65.99
8 Reviews

Neptune Systems
2" Flow Sensor FS200
$93.49 $109.99
Neptune Systems
Aquabus Extension Cable
From: $20.39

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Neptune Systems
1Link Male x Male 4 Pin Cable
$20.39 $23.99
10 Reviews

Hanna Instruments
Marine Master Bluetooth Multiparameter Photometer HI97115
$359.99 $449.99
4 Reviews

Hanna Instruments
Marine Monitor (pH/Salinity/Temperature)
$239.99 $299.99
Focustronic
Powertronic Smart Power Bar
$88.00 $110.00
GHL
Profilux Tunze Connection Cable - Type 1
$4.47 $14.90
2 Reviews

GHL
Profilux Vortech Controller
$50.97 $169.90
GHL
Plumbing Union for Profilux 528 GPH Flow Sensor - Metric
$3.27 $10.90
4 Reviews

Adaptive Reef
Standard Aquarium Controller Board
From: $123.19

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5 Reviews

Adaptive Reef
Deluxe Aquarium Controller Board (with hinges)
From: $199.99

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1 Review

Reef Factory
KH keeper Plus
$578.99 $771.99
2 Reviews

Reef Factory
Thermo control Smart Temperature Controller
$131.24 $174.99
Reef Factory
pH meter
$182.24 $242.99
Reef Factory
Thermo view Temperature Monitor
$80.24 $106.99
Reef Factory
TDS meter Plus
$83.99 $111.99
Reef Factory
Level sensor
$50.99 $67.99
1 Review

Focustronic
Dosetronic 5 Channel Smart Doser
$571.99 $714.99
Focustronic
Dosetronic DC 5 Channel Dosing Pump
$439.20 $549.00
53 Reviews

Neptune Systems
DDR DOS Dual Reservoir
$183.59 $215.99
GHL
Profilux 3 meter Sensor Extension Cable
$6.57 $21.90
15 Reviews

Neptune Systems
PM1 pH/ORP Probe Module
$80.74 $94.99
10 Reviews

Neptune Systems
PM2 Salinity Module
$80.74 $94.99
8 Reviews

Neptune Systems
LDK Leak Detection Kit
$140.24 $164.99
1 Review

Neptune Systems
1LINK Power and Communication Module w/ Power Supply
$144.49 $169.99
11 Reviews

Neptune Systems
VDM LED & Pumps Control Module
$93.49 $109.99
27 Reviews

Neptune Systems
LSM Lunar Simulator Module
$63.74 $74.99
Neptune Systems
PM3 Dissolved Oxygen Module
$89.24 $104.99
68 Reviews

Hanna Instruments
HI98319 Marine Salinity Tester
$71.99 $89.99
1 Review

Milwaukee Instruments
MC125 pH/ORP Controller Combo
$202.40 $253.00
3 Reviews

Milwaukee Instruments
Milwaukee MC510 ORP Controller
$140.80 $176.00
15 Reviews

Milwaukee Instruments
Milwaukee MC122 pH Controller
$130.40 $163.00
5 Reviews

Milwaukee Instruments
Milwaukee MC120 pH Monitor
$87.99 $109.99
3 Reviews

Hanna Instruments
HI98108 Waterproof pHep+ Pocket Tester
$55.99 $69.99
20 Reviews

American Marine Inc.
PINPOINT pH Monitor
$80.74 $94.99
1 Review

Red Sea
Slide Out Control Panel
From: $96.80

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$Refractometer Calibration Solution$

13 Reviews

Bulk Reef Supply
Refractometer Calibration Solution
$5.99 $7.99
6 Reviews

Neptune Systems
12V Power Supply
$14.44 $16.99
$Refractometer & Hydrometer Calibration Standard$

4 Reviews

Brightwell Aquatics
Refractometer & Hydrometer Calibration Standard
From: $4.33

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2 Reviews

Hanna Instruments
Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
$167.99 $209.99
Neptune Systems
DC24V Power Supply
$21.24 $24.99
$MA887 Digital Seawater Refractometer - Milwaukee$

138 Reviews

Milwaukee Instruments
MA887 Digital Seawater Refractometer - Milwaukee
$113.60 $142.00
8 Reviews

Apogee
MQ-510 Full Spectrum Underwater LED PAR Meter
$399.00 $532.00
Neptune Systems
36W 24VDC Power Supply
$29.74 $34.99
Neptune Systems
1Link Extension Cable
$20.39 $23.99
2 Reviews

Neptune Systems
DC24 Extension Cable
$16.99 $19.99
3 Reviews

Neptune Systems
DC24 to Bare Wire Accessory Cable
$16.99 $19.99
Neptune Systems
Replacement Dissolved Oxygen Probe Membrane Kit
$67.99 $79.99
3 Reviews

Neptune Systems
Lab Grade Dissolved Oxygen Probe
$671.49 $789.99
5 Reviews

Neptune Systems
1LINK Module Replacement Power Supply
$46.71 $54.95
9 Reviews

Neptune Systems
DOS Replacement Tubing
From: $4.24

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7 Reviews

Tunze
Water Valve 8555.200
$91.99 $114.99
10 Reviews

Neptune Systems
AquaBus Cable
From: $10.19

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24 Reviews

Neptune Systems
Lunar Simulator Lunar LED Strings
From: $29.74

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3 Reviews

Neptune Systems
2 Channel Apex to Light Dimming Cable
$14.44 $16.99
29 Reviews

Neptune Systems
I/O Breakout Box
$40.79 $47.99
Adaptive Reef
Deluxe Mini Aquarium Controller Board
From: $91.99

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Adaptive Reef
Mini Neptune DOS Controller Board
From: $91.99

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Adaptive Reef
Mini Neptune Apex Controller Board
From: $91.99

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Reef Factory
Probes Multi holder
$22.49 $29.99
Reef Factory
pH 7 Calibration Liquid
$5.24 $6.99
Reef Factory
pH 4 Calibration Liquid
$5.24 $6.99
Reef Factory
pH Probe Cleaning Solution
$4.12 $5.49
Reef Factory
KH keeper Plus Mixing Pill
$2.09 $2.79
Reef Factory
Reef Factory pH Probe
$85.49 $113.99
Reef Factory
KH keeper Plus Glass Beaker
$5.24 $6.99
Reef Factory
KH keeper Ready-to-Use Reagent (5L)
$36.74 $48.99
Reef Factory
KH keeper Plus Maintenance Kit
$22.88 $30.50
Reef Factory
KH keeper Concentrated Reagent
From: $36.74

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2 Reviews

Reef Factory
Smart tester Automated Testing Device
$459.74 $612.99
Reef Factory
Reef Factory Salinity guardian Probe
$135.37 $180.49
Reef Factory
Salinity guardian 35ppt Calibration Liquid
$5.62 $7.49
1 Review

Reef Factory
Smart tester Phosphate Reagent Cartridges
$19.87 $26.49
Reef Factory
Smart tester Magnesium Reagent Cartridges
$19.87 $26.49
16 Reviews

Neptune Systems
Solid Surface Advanced Leak Detection Probe
$27.19 $31.99
4 Reviews

Neptune Systems
Low-Profile Advanced Leak Detection Probe
$27.19 $31.99
1 Review

Neptune Systems
EB4 & A3 Apex Jr. Controller System Bundle
$362.05 $425.94

Add to Cart
21 Reviews

Neptune Systems
PMK PAR Monitoring Kit
$288.99 $339.99
2 Reviews

Neptune Systems
LD-3 Optical Multi-Surface Leak Sensor
$36.54 $42.99
15 Reviews

Neptune Systems
SV-1 Solenoid Valve
$29.74 $34.99
35 Reviews

Neptune Systems
WSK WAV Starter Kit
$467.49 $549.99
28 Reviews

Neptune Systems
WAV Single Pump (4000 GPH)
$212.49 $249.99
4 Reviews

Neptune Systems
DOS Replacement Pump Head
$31.44 $36.99
11 Reviews

Neptune Systems
EB4 Energy Bar 4
$107.09 $125.99
Focustronic
Alkatronic Inner Hose - Pump A
$7.20 $9.00
Adaptive Reef
Controller Board Base - Black
$79.99 $99.99
Adaptive Reef
Controller Board Base - White
$79.99 $99.99
Adaptive Reef
Audible & Visual Apex Alarm
$87.99 $109.99