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Aquarium controllers are an essential part of a complete aquarium system. These sophisticated automation systems include a portfolio of accessories to monitor and control equipment like water level sensors, ATO pumps, and other devices.

At AquaCave, we offer some of the best selections and best prices on Aquarium Controllers and controller accesories for your marine, reef, and freshwater aquarium.

60 of 145 Items
  • HYDROS X10 Controller & Dosing System HYDROS X10 Controller & Dosing System HYDROS X10 Controller & Dosing System HYDROS X10 Controller & Dosing System HYDROS X10 Controller & Dosing System

    HYDROS

    HYDROS X10 Controller & Dosing System

    HYDROS X10 Controller & Dosing System The Control X10 is the ultimate HYDROS system controller with twin Drive ports, four Sense ports, a pH/ORP port, a Salinity probe port, four stepper dosing motors, and the ability to control up to eight WiFi...

    $923.99
  • HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack

    HYDROS

    HYDROS Control X4 / XP8 PRO Pack

    HYDROS Control X4 / XP8 PRO Pack The Ultimate Aquarium Monitoring and Control System The HYDROS Control X4 PRO Pack includes two Control devices, the Control XP8 and Control X4. Combine these Controls to create a secure and impressive set-up for...

    $820.04
  • Alkatronic Alkalinity Controller Alkatronic Alkalinity Controller Alkatronic Alkalinity Controller

    FOCUSTRONIC

    Alkatronic Alkalinity Controller

    Alkatronic Alkalinity Controller The Alkatronic is an all-in-one device that automatically monitors and maintains carbonate hardness values of your aquarium throughout the day. It can dramatically simplify and improve how we manage the KH parameters of...

    Was: $989.99
    Now: $692.99
  • HYDROS Kraken 24V Power Center HYDROS Kraken 24V Power Center HYDROS Kraken 24V Power Center HYDROS Kraken 24V Power Center HYDROS Kraken 24V Power Center

    HYDROS

    HYDROS Kraken 24V Power Center

    HYDROS Kraken 24V Power Center The Kraken introduces a new concept in aquarium controllers and provides high-power 24V DC switched outputs and a large heavy-duty power supply. This allows “power bricks” and “wall warts” to be removed from aquarium...

    $692.99
  • HYDROS Launch HYDROS Launch HYDROS Launch HYDROS Launch HYDROS Launch

    HYDROS

    HYDROS Launch

    HYDROS Launch The Launch is the perfect starting point for aquarium control. It measures pH and temperature, controls four outlets, and connects to eight wifi devices. With additional accessories, it can detect leaks, monitor water levels, track...

    $635.24
  • Dosetronic Dosing Pump Dosetronic Dosing Pump Dosetronic Dosing Pump Dosetronic Dosing Pump Dosetronic Dosing Pump

    FOCUSTRONIC

    Dosetronic Dosing Pump

    Dosetronic 5 Pump Dosing Station Dosetronic is a truly smart dosing station for the reef aquarium with 5 independent channels that are using high precision stepper motors. When combined with the Alkatronic, the 2 unique functions...

    Was: $714.99
    Now: $571.99
  • Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server

    Seneye

    Seneye Reef Pack with Dri Box and WiFi Web Server

    Seneye Reef Pack with Dri Box and WiFi Web Server Are your corals not as vibrant as you expect? Have you ever had an aquarium crash unexpectedly? Now with the seneye Reef you can continuously monitor and analyze key life-critical parameters in your...

    $566.99
  • HYDROS Control 4 Starter Pack HYDROS Control 4 Starter Pack HYDROS Control 4 Starter Pack HYDROS Control 4 Starter Pack

    HYDROS

    HYDROS Control X4 Starter Pack

    HYDROS Control 4 Starter Pack Achieve Ultimate Aquarium Control with the HYDROS Control 4 Starter Pack This starter kit includes all essential equipment needed to monitor and control a healthy aquarium including a Control 4 device, HYDROS App,...

    $532.39
  • COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems

    Neptune Systems

    COR-20 Water Pump - Neptune Systems

    COR20 Intelligent Return Pump - Neptune Systems Your return pump is by far the most important piece of equipment on your aquarium. It circulates the water which is basically the life-blood of a tank. Creating a great aquarium is just like building a...

    $449.99
  • COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems

    Neptune Systems

    COR-15 Water Pump - Neptune Systems

    COR15 Intelligent Return Pump - Neptune Systems Your return pump is by far the most important piece of equipment on your aquarium. It circulates the water which is basically the life-blood of a tank. Creating a great aquarium is just like building a...

    $399.99
  • Reef Delete V1.02 Reef Delete V1.02

    Seneye

    Reef Delete V1.02

    Reef Delete ITC Reefculture V1.02 New Version The perfect reef aquarium is free of pests. Nothing to sting, eat or smother your beautiful corals! However, every reef aquarist knows that this isn’t always the case!   Reef Delete  is like having...

    $399.99
  • Neptune Systems EnergyBar EB-832 Neptune Systems EnergyBar EB-832 Neptune Systems EnergyBar EB-832 Neptune Systems EnergyBar EB-832 Neptune Systems EnergyBar EB-832

    Neptune Systems

    Neptune Systems EnergyBar EB-832

    Neptune Systems Energy-Bar 832 8 Independently Controllable Outlets Individual Outlet Power Monitoring Two 24VDC Accessory Ports Three 1Link Ports Three AquaBus Ports   The Neptune Systems Energy Bar 832 (EB832) is designed as an ultimate power...

    $359.99
  • HYDROS Control XP8 (Controller Only) HYDROS Control XP8 (Controller Only) HYDROS Control XP8 (Controller Only) HYDROS Control XP8 (Controller Only)

    HYDROS

    HYDROS Control XP8 (Controller Only)

    HYDROS Control XP8 (Controller Only) ***Please note: CONTROL XP8 ONLY - Nothing else is included*** Achieve Ultimate Security with the HYDROS Control XP8 Power Strip The HYDROS Control XP8 is an eight 120V AC outlet energy bar and can control eight...

    $347.64
  • HYDROS Sole Controller HYDROS Sole Controller HYDROS Sole Controller HYDROS Sole Controller HYDROS Sole Controller

    HYDROS Sole Controller

    HYDROS Sole Controller The HYDROS Sole is an aquarium controller hybrid with a heavy-duty liquid dosing pump designed for continuous dosing tasks in saltwater and freshwater aquariums. It can be used independently or with other HYDROS devices. Controller...

    $346.49
  • Neptune Systems PMK PAR Monitoring Kit Neptune Systems PMK PAR Monitoring Kit Neptune Systems PMK PAR Monitoring Kit

    Neptune Systems

    Neptune Systems PMK PAR Monitoring Kit

    Neptune Systems PMK PAR Monitoring Kit FeaturesFeatures and Benefits: Performs continuous light-level monitoring for your aquarium Measures actual PAR – the light corals and plants use Prevents burning out corals Includes ASM – the new...

    $339.99
  • HYDROS Minnow Controller HYDROS Minnow Controller HYDROS Minnow Controller HYDROS Minnow Controller HYDROS Minnow Controller

    HYDROS

    HYDROS Minnow Controller

    HYDROS Minnow HYDROS Minnow is an aquarium controller with two micro-liquid dosing pumps for precise dosing of two-part and trace elements. It can handle essential functions for maintaining a healthy aquarium and connect up to four sense port...

    $288.74
  • ATK v2 - Automatic Top-Off Kit - Neptune Systems ATK v2 - Automatic Top-Off Kit - Neptune Systems

    Neptune Systems

    ATK v2 - Automatic Top-Off Kit - Neptune Systems

    ATK v2 - Automatic Top-Off Kit - Neptune Systems Auto Top Off Kit (Version 2) (ATKv2) The ATKv2 (Automatic Top-off Kit) is a simple, standalone, and complete solution for replacing water lost to evaporation. The kit includes: FMM Module (Runs...

    $269.99
  • Neptune Systems FMK Flow Monitoring Kit Neptune Systems FMK Flow Monitoring Kit Neptune Systems FMK Flow Monitoring Kit Neptune Systems FMK Flow Monitoring Kit Neptune Systems FMK Flow Monitoring Kit

    Neptune Systems

    Neptune Systems FMK Flow Monitoring Kit

    Neptune Systems Flow Monitoring Kit (FMM, (2) FS-50, (4) 1/2" Adapters, (1) FS-100, (2) 1" union START MONITORING FLOW IN YOUR AQUARIUM. THIS KIT INCLUDES: FMM - FLUID MONITORING MODULE 1'' FLOW SENSOR (FS-100) TWO 1/2'' FLOW SENSORS...

    $259.99
  • Neptune Systems DDR Dual Reservoir Neptune Systems DDR Dual Reservoir Neptune Systems DDR Dual Reservoir Neptune Systems DDR Dual Reservoir Neptune Systems DDR Dual Reservoir

    Neptune Systems

    Neptune Systems DDR Dual Reservoir

    Neptune Systems DDR Dual Reservoir This attractive fluid containment system stores your dosing fluids in style and even tells you when it’s time to refill! Each side stores two liters (2L) of fluid Connects directly to your DŌS Optical...

    $259.99
  • HYDROS Control X3 (Controller Only) HYDROS Control X3 (Controller Only) HYDROS Control X3 (Controller Only) HYDROS Control X3 (Controller Only) HYDROS Control X3 (Controller Only)

    HYDROS

    HYDROS Control X3 (Controller Only)

    HYDROS Control X3 (Controller Only) Achieve Ultimate Aquarium Control with the HYDROS Control X3 The HYDROS Control X3 can connect to two sensor devices including temperature sensors, water level sensors, and leak detectors. The device also includes...

    $248.31
  • Seneye Reef Monitor Seneye Reef Monitor Seneye Reef Monitor Seneye Reef Monitor Seneye Reef Monitor

    Seneye

    Seneye Reef Monitor

    Seneye Reef Pack with Dri Box and WiFi Web Server Are your corals not as vibrant as you expect? Have you ever had an aquarium crash unexpectedly? Now with the seneye Reef you can continuously monitor and analyze key life-critical parameters in your...

    $241.49
  • Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller

    Milwaukee Instruments

    Milwaukee MC122 pH Controller

    Milwaukee MC122 pH Controller. ACCURATE. SIMPLE. RELIABLE. 24/7 PH CONTROL. The Milwaukee MC122 PRO pH controller lets you measure and adjust pH levels automatically. WHAT PEOPLE ARE SAYING "I run this unit 24/7 and have not had any problems for the...

    $208.15
  • IceCap Battery Backup v3.0 IceCap Battery Backup v3.0 IceCap Battery Backup v3.0 IceCap Battery Backup v3.0

    IceCap

    IceCap Battery Backup v3.0

    IceCap Battery Backup v3.0 for Aquarium Pumps When it comes to a power failure, it’s not a matter of if, but when. Fish and corals can perish in as little as 4 hours without water flow. The IceCap Battery Battery Backup Version 3.0 will keep your...

    $202.11
  • Neptune Systems 1LINK Power and Communication Module Neptune Systems 1LINK Power and Communication Module Neptune Systems 1LINK Power and Communication Module

    Neptune Systems

    Neptune Systems 1LINK Power and Communication Module

    Neptune Systems 1LINK Power and Communication Module The 1Link Module from Neptune Systems will hook up to any current Apex controller and allow control of the WAV pumps. A single 1Link module can control up to 3 separate WAV pumps off a single...

    $199.99
  •  Pinpoint Temperature Controller    Pinpoint Temperature Controller

    Pinpoint - American Marine

    Pinpoint Temperature Controller

    Pinpoint Temperature Controller by American Marine. PINPOINT Temperature Controller™ is an inexpensive but rugged controller that can be used for a chiller or a heater; or both a chiller and a heater. Fully programmable setpoints. Farenheit only...

    $199.95
  • IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only

    IceCap

    IceCap 4K Gyre Flow Pump Only

    IceCap 4K Gyre Flow Pump Only The IceCap Gyre is back and better than ever! The all-new IceCap 4K Gyre Flow Pump is more powerful than its 3K predecessor.  Gyre 4K Pump Features & Benefits Unique Gyre Flow: Virtually Eliminates Dead...

    $184.79
  • Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer

    Milwaukee Instruments

    Milwaukee MA887 Digital Refractometer

    Milwaukee MA887 Digital RefractometerThe MR series refractometers are precision optical instruments used for measuring aquarium water salinity. They work using principle of light refraction through liquid.Specifications:Range: PSU: 0 - 50 PPT: 0 -...

    $175.00
  • Milwaukee CO2 Regulator w/Solenoid Valve, MA957 Milwaukee CO2 Regulator w/Solenoid Valve, MA957

    Milwaukee Instruments

    Milwaukee CO2 Regulator w/Solenoid Valve, MA957

    Milwaukee CO2 Regulator w/Solenoid Valve, MA957. CO2 regulator by Milwaukee Instruments includes solenoid valve and bubble counter. Unit comes with dual gauges each with dual reading of both psi & kg/cm. Left gauge meters tank capacity and right...

    $156.75
  • Neptune Systems Energy Bar 4

    Neptune Systems

    Neptune Systems Energy Bar 4

    Neptune Systems Energy Bar 4   The EnergyBar 4 / EB-4 module features 4 independently controllable outlets. With power failure detection, active electrical current monitoring, and failsafe features make this power bar far better than any competing units...

    $149.99
  • Neptune Systems ADM Apex Display Module

    Neptune Systems

    Neptune Systems ADM Apex Display Module

    Neptune Systems ADM Apex Display Module Apex Display Module-ADM The Apex Display module is a sleek and compact way for your to interact with the Apex Base Unit and control nearly every aspect of your Aquarium. Mechanical, not membrane keypad Our...

    $141.99
  • Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System

    Neptune Systems

    Neptune Systems AFS Automatic Feeding System

    Neptune Systems AFS Automatic Feeding System Great things happen when you combine the functionality of our proven Apex AquaController and the mechanics of a great autofeeding mechanism. It has long been known that feeding smaller amounts, more often, is...

    $139.99
  • Neptune Systems Fluid Monitoring Module - FMM Neptune Systems Fluid Monitoring Module - FMM Neptune Systems Fluid Monitoring Module - FMM

    Neptune Systems

    Neptune Systems Fluid Monitoring Module - FMM

    Neptune Systems Fluid Monitoring Module - FMM Neptune Systems FMM Fluid Monitoring Module Flow Monitoring Leak Detection Water Level Management DC24 Accessory Port   The Neptune Systems FMM Fluid Monitoring Module offers practical solutions for...

    $139.99
  • Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor

    Milwaukee Instruments

    Milwaukee MC120 PRO pH Monitor

    Milwaukee MC120 PRO pH Monitor DESCRIPTION The Milwaukee MC120 PRO High Range pH monitor offers lab grade accuracy with an easily viewable continuous check on pH levels with alarms. DESIGN FEATURES Fast easy to read results with large digital LCD...

    $139.15
  • Salifert Master Reef Testing Combo Kit Salifert Master Reef Testing Combo Kit Salifert Master Reef Testing Combo Kit Salifert Master Reef Testing Combo Kit Salifert Master Reef Testing Combo Kit

    Salifert

    Salifert Master Reef Testing Combo Kit

    Salifert Master Reef Testing Combo Kit  Six Salifert Professional Test Kits Includes Calcium, Nitrate, Phosphate, pH, Alkalinity & Magnesium Includes all the Core parameters of any Saltwater Aquarium/Marine Reef Tank   Salifert Nitrate...

    $132.43
  • Neptune Systems Double Junction Lab Grade ORP Probe

    Neptune Systems

    Neptune Systems Double Junction Lab Grade ORP Probe

    Neptune Systems Double Junction Lab Grade ORP Probe Neptune Double Junction probes will out last most other traditional lab grade probes letting you go longer between calibrations, and having to purchase and replace probes less frequently. The Double...

    $129.99
  • Neptune Systems Double Junction Lab Grade pH Probe

    Neptune Systems

    Neptune Systems Double Junction Lab Grade pH Probe

    Neptune Systems Double Junction Lab Grade pH Probe Neptune Double Junction probes will out last most other traditional lab grade probes letting you go longer between calibrations, and having to purchase and replace probes less frequently. The Double...

    $119.99
  • Neptune Trident Six-Month Reagent Kit Neptune Trident Six-Month Reagent Kit

    Neptune Systems

    Neptune Trident Six-Month Reagent Kit

    Neptune Trident Six-Month Reagent Kit Neptune System's Replacement Reagent Kit comes with everything you need to change out the reagents for the Trident Marine Water Analyzing System. Each kit comes with new bottles that can be placed directly into the...

    $109.99
  • Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester

    Hanna Instruments

    Hanna Instruments Marine Salinity Tester

    Hanna Instruments - Marine Salinity Tester Designed to bring simplicity to salinity testing during the any process, the HI98319 Marine Salinity Tester measures conductivity (EC) to determine the salinity of natural and artificial seawater. Within...

    $99.99
  • HYDROS Triple Optical ATO Kit HYDROS Triple Optical ATO Kit HYDROS Triple Optical ATO Kit HYDROS Triple Optical ATO Kit HYDROS Triple Optical ATO Kit

    HYDROS Triple Optical ATO Kit

    HYDROS Triple Optical ATO Kit The CoralVue HYDROS Auto Top-Off Kit Includes: HYDROS Triple Water Level Sensor (plugs into HYDROS Sense Port), HYDROS DC Micro Pump (plugs into HYDROS Drive Port), Hang-On Tubing Mount, Tubing & Siphon...

    $92.39
  • Neptune Systems LSM Lunar Simulator Module Neptune Systems LSM Lunar Simulator Module Neptune Systems LSM Lunar Simulator Module

    Neptune Systems

    Neptune Systems LSM Lunar Simulator Module

    Neptune Systems LSM Lunar Simulator Module. Add the Lunar Simulator Module Apex Unit to create a true lunar cycle to your reef aquarium. Many fish and corals will spawn following the lunar cycle and will help mimic their natural habitat while adding...

    $89.99
  •  Pinpoint pH Monitor

    Pinpoint - American Marine

    Pinpoint pH Monitor

    Pinpoint pH Monitor by American Marine.The PINPOINT pH Monitor™ is in use by thousands of customers worldwide. This affordable unit remains the only full-time pH monitor with .01 resolution. The PINPOINT pH Monitor™ is sold complete with...

    $89.95
  • Neptune Systems Flow Sensor - 1" with unions - FS100

    Neptune Systems

    Neptune Systems Flow Sensor - 1" with unions - FS100

    Neptune Systems Flow Sensor - 1" with unions - FS100 Usually used with a return pump, this flow sensor can be placed in line with the flow on any pipe, connected to the FMM, and communicate to your Apex the flow rate of water through that pipe. The...

    $79.99
  • Neptune Systems LLS Liquid Level Sensor - 15 Inch Neptune Systems LLS Liquid Level Sensor - 15 Inch Neptune Systems LLS Liquid Level Sensor - 15 Inch

    Neptune Systems

    Neptune Systems LLS Liquid Level Sensor - 15 Inch

    Neptune Systems LLS Liquid Level Sensor - 15 Inch The Neptune LLS is a first of its kind industry exclusive! While most liquid level sensors simply measure the presence or absence of liquid at a predetermined  sensor height, the LLS is one continuous...

    $79.99
  • Red Sea MCP Test Kit Marine Care Master Red Sea MCP Test Kit Marine Care Master

    Red Sea

    Red Sea MCP Test Kit Marine Care Master

    Red Sea MCP Test Kit Marine Care Master.The Red Sea Marine Care Program Marine Care Test Kit includes easy to use tests for the accurate monitoring of all of the important parameters during the biological maturation of marine reef aquariums. Includes:...

    $79.99
  • Red Sea Seawater Refractometer, High Accuracy Red Sea Seawater Refractometer, High Accuracy

    Red Sea

    Red Sea Seawater Refractometer, High Accuracy

    Red Sea Seawater Refractometer (Reef Spec) High Accuracy Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine (NaCl - rather than seawater) and at a...

    $79.99
  •  Hanna HI702 High Range Copper Checker  Hanna HI702 High Range Copper Checker  Hanna HI702 High Range Copper Checker  Hanna HI702 High Range Copper Checker

    Hanna Instruments

    Hanna HI702 High Range Copper Checker

    Hanna High Range Copper Checker - HI702 The HI702 Checker®HC (Handheld Colorimeter) is a simple, accurate, and cost effective way to measure high ranges of copper. Designed as a more accurate alternative to chemical test kits, the HI702 provides...

    $74.99
  • Hanna HI713 Phosphate Checker Hanna HI713 Phosphate Checker Hanna HI713 Phosphate Checker

    Hanna Instruments

    Hanna HI713 Phosphate Checker

    Hanna Phosphate Checker HI713 The HANNA HI 713 CheckerHC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give only a few resolution points while professional...

    $74.99
  • Hanna HI721 Iron Checker Hanna HI721 Iron Checker Hanna HI721 Iron Checker

    Hanna Instruments

    Hanna HI721 Iron Checker

    Hanna Iron Checker HI721 For use in fresh and saltwater The new HI 721 Checker HC portable handheld colorimeter features a resolution of 0.01 ppm (500 points) and 0.04 ppm 2% of reading accuracy. The HI 721 CheckerHC uses an adaptation of Standard...

    $74.99
60 of 145 Items