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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.

  • Ice Cap Magnetic Probe Holder 4 Port Ice Cap Magnetic Probe Holder 4 Port Ice Cap Magnetic Probe Holder 4 Port

    Ice Cap Magnetic Probe Holder 4 Port

    Ice Cap Magnetic Probe Holder 4 Port A SIMPLE WAY TO ORGANIZE AND MOUNT PROBES The IceCap magnetic probe holder universally mounts tubing securely to most smooth locations up to 1/2in thick. Also available as a 2-Tube holder and a 4-Tube holder...

    $27.49
  • Ice Cap Magnetic Tubing Holder 4 Port Ice Cap Magnetic Tubing Holder 4 Port Ice Cap Magnetic Tubing Holder 4 Port

    Ice Cap Magnetic Tubing Holder 4 Port

    Ice Cap Magnetic Tubing Holder 4 Port The IceCap magnetic tube holder universally mounts tubing securely to most smooth locations up to 1/2in thick. Also available as a 2-Tube holder and a 4-Probe holder. Magnetic holder can be fixed on the sump or...

    $27.49
  • Red Sea MCP Nitrite & Nitrate Test Kit

    Red Sea

    Red Sea MCP Nitrite & Nitrate Test Kit

    Red Sea MCP Nitrite & Nitrate Test KitThese tests have been redeveloped to a single kit with a common reagent.Red Sea MCP Nitrite & Nitrate Test KitThese tests have been redeveloped to a single kit with a common reagent.Product code: 2796Item No...

    $26.99
  • HYDROS DC Micro Pump HYDROS DC Micro Pump HYDROS DC Micro Pump HYDROS DC Micro Pump HYDROS DC Micro Pump

    HYDROS

    HYDROS DC Micro Pump

    HYDROS DC Micro Pump With a HYDROS DC Micro Pump and a HYDROS Optical Water Level Sensor (or Float Sensor), you can use the HYDROS Control 2 and Control 4 as an auto top-off (ATO) system. Just plug the pump into a Drive Port and the...

    $25.99
  • HYDROS DC Solenoid Water Valve HYDROS DC Solenoid Water Valve HYDROS DC Solenoid Water Valve HYDROS DC Solenoid Water Valve

    HYDROS

    HYDROS DC Solenoid Water Valve

    HYDROS DC Solenoid Water Valve The HYDROS DC Solenoid Valve is a handy HYDROS Control 2 and Control 4 accessory that provides easy on/off RO or RO/DI water flow. You can connect the solenoid to your reverse osmosis filter and use it...

    $25.99
  • HYDROS IceCap Battery Backup Cable Kit HYDROS IceCap Battery Backup Cable Kit

    HYDROS

    HYDROS IceCap Battery Backup Cable Kit

    HYDROS IceCap Battery Backup Cable Kit This cable kit allows you to connect your HYDROS WaveEngine to the IceCap Battery Backup V3.  Connection is simple: Connect the HYDROS WaveEngine Power Supply to the battery kit cable with the female 4-pin GX12...

    $25.99
  • HYDROS Magnet Mount Temperature Sensor HYDROS Magnet Mount Temperature Sensor HYDROS Magnet Mount Temperature Sensor

    HYDROS

    HYDROS Magnet Mount Temperature Sensor

    HYDROS Magnet Mount Temperature Sensor The HYDROS Temperature Sensor is an easy and affordable way to prevent your aquarium water from becoming too cold or too hot. It monitors the water temperature in your aquarium so you can keep it within the safe...

    $25.99
  • HYDROS Slim Temperature Sensor Probe HYDROS Slim Temperature Sensor Probe

    HYDROS

    HYDROS Slim Temperature Sensor Probe

    HYDROS Slim Temperature Sensor Probe The HYDROS Slim Temperature Sensor Probe is only 1.6” long and 0.32” wide. It’s all-black solid waterproof IP68 construction is built for years of reliable service. It is a “set it...

    $25.99
  • HYDROS System Command Bus Cable 25 ft. (DATA ONLY)

    HYDROS

    HYDROS System Command Bus Cable 25 ft. (DATA ONLY)

    HYDROS System Command Bus Cable 25 ft. (DATA ONLY) CoralVue HYDROS 5PIN System Command Bus Cable (DATA ONLY) This HYDROS System Command Bus DATA ONLY Cable allows HYDROS devices to communicate. This is a DATA ONLY cable that cannot supply power from...

    $25.99
  • Hanna Copper High Range Checker HC Calibration Check Set Hanna Copper High Range Checker HC Calibration Check Set

    Hanna Instruments

    Hanna Copper High Range Checker HC Calibration Check Set

    Hanna Copper High Range Checker HC Calibration Check Set HI702-11 is a high-quality set of calibration standards that allows users to validate the Copper High Range Checker®HC - HI702. The HI702-11 includes one sealed cuvette for zero ppm copper and...

    Was: $29.99
    Now: $25.49
  • Alkalinity Testing Reagent - 1L Concentrated

    CoralVue

    Alkalinity Testing Reagent - 1L Concentrated

    Alkalinity Testing Reagent - 1L Concentrated Concentrated Reagent Specifically for Alkalinity Testing Machines A concentrated reagent for both Focustronic Alkatronic and Kamoer KH Carer.  (See mixing instructions below) Kamoer KH Carer Mixing...

    $24.99
  • Red Sea Calcium Pro Test Refill Red Sea Calcium Pro Test Refill

    Red Sea

    Red Sea Calcium Pro Test Refill

    Red Sea Calcium Pro Test Refill Features Refill contains all reagents used in the Red Sea calcium test kit Calcium, an essential component in the building of coral skeletons, is constantly depleted from the aquarium and needs to be monitored on a...

    $24.99
  • Red Sea KH/Alkalinity Pro Test Refill Red Sea KH/Alkalinity Pro Test Refill

    Red Sea

    Red Sea KH/Alkalinity Pro Test Refill

    Red Sea KH/Alkalinity Pro Test Refill Advanced titration test measuring the level of buffers in your reef aquarium, with exceptionally high accuracy of 0.05 meq/l (0.14 dKH) Red Sea’s KH\ALKALINITY PROReef Test Kit is an advanced titration test,...

    $24.99
  • Red Sea Magnesium Pro Test Refill Red Sea Magnesium Pro Test Refill

    Red Sea

    Red Sea Magnesium Pro Test Refill

    Red Sea Magnesium Pro Test Refill Advanced titration test measuring the level of Magnesium in your reef aquarium, with exceptionally high accuracy of 20 ppm  Test Name Element Accuracy Range Test Type No. of test Magnesium...

    $24.99
  • YCA Magnetic Probe Holder YCA Magnetic Probe Holder

    Your Choice Aquatic

    YCA Magnetic Probe Holder

    YCA Magnetic Probe Holder Probe holder can fit up to four probes. Its design to hold ph, ORP, salinity and/or temp probe. It has a magnet on the back and can be easily install on the sump wall, baffle divider or aquarium wall. Magnetic can work up to...

    $24.99
  • Ground Isolated Serial Connector by Neptune Systems

    Neptune Systems

    Ground Isolated Serial Connector by Neptune Systems

    The ground isolated serial connector (SERIPC9) is used to break ground loops between your PC and the AquaController...Ground Isolated Serial Connector by Neptune Systems. The ground isolated serial connector (SERIPC9) is used to break ground loops...

    $34.95
    $24.95
  • Seneye USB Extension Accessory (2.5m ) Seneye USB Extension Accessory (2.5m ) Seneye USB Extension Accessory (2.5m )

    Seneye

    Seneye USB Extension Accessory (2.5m )

    Seneye USB Extension Accessory (2.5m ) Now you can connect your seneye device to your PC, or power adaptor, up to 5m from your aquarium and enjoy error-free data transmissions. The Hi-Speed USB 2.0 Extension Cable helps you achieve maximum performance...

    $24.00
  • HYDROS Smart Plug HYDROS Smart Plug HYDROS Smart Plug HYDROS Smart Plug HYDROS Smart Plug

    HYDROS

    HYDROS Smart Plug

    HYDROS Smart Plug A Smart and Affordable Way to Power Your Aquarium Gear The HYDROS WiFi Smart Plug is a smart power outlet designed to work with the CoralVue HYDROS platform. The Smart Plug has a 1 x 100-250V AC outlet that is WiFi controllable using...

    $23.99
  • Red Sea MCP Ammonia Test Kit

    Red Sea

    Red Sea MCP Ammonia Test Kit

    Red Sea MCP Ammonia Test Kit This advanced colorimetric test has been redeveloped to measure the total ammonia (NH3/NH4) in marine aquariums to an accuracy of 0.15ppm.Red Sea MCP Ammonia Test KitThis advanced colorimetric test has been redeveloped...

    $23.99
  • Red Sea MCP PH & KH Alkalinity Test Kit

    Red Sea

    Red Sea MCP PH & KH Alkalinity Test Kit

    Red Sea MCP PH & KH Alkalinity Test KitpH/KH Test Kit The KH test has been redeveloped in a simple titration format (drops from the bottle) that gives an accuracy of 0.5 dKH. Red Sea MCP PH & KH Alkalinity Test KitpH/KH Test Kit The KH test has...

    $23.99
  • Ice Cap Magnetic Tubing Holder 2 Port Ice Cap Magnetic Tubing Holder 2 Port

    Ice Cap Magnetic Tubing Holder 2 Port

    Ice Cap Magnetic Tubing Holder 2 Port A SIMPLE WAY TO ORGANIZE YOUR DOSING LINES The IceCap magnetic tube holder universally mounts tubing securely to most smooth locations up to 1/2in thick. Also available as a 4-Tube holder and a 4-Probe holder...

    $21.99
  • Neptune Systems Flow Sensor - 1/4" - FS25

    Neptune Systems

    Neptune Systems Flow Sensor - 1/4" - FS25

    Neptune Systems Flow Sensor - 1/4" - FS25 Usually used with aquarium accessories like RODI inputs, calcium reactor feed lines etc., this flow sensor can be placed in line with the flow on 1/4″ tubing, connected to the FMM, and...

    $21.99
  • Hanna HI780-25 pH Reagents Hanna HI780-25 pH Reagents

    Hanna Instruments

    Hanna HI780-25 pH Reagents

    Hanna HI780-25 pH Reagents Get your replacement reagents for your HI780 Marine pH Checker® HC today. These high-quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on...

    Was: $24.99
    Now: $21.24
  • Hanna HI783-11 Marine Magnesium Certified Standard Kit Hanna HI783-11 Marine Magnesium Certified Standard Kit

    Hanna Instruments

    Hanna HI783-11 Marine Magnesium Certified Standard Kit

    Hanna HI783-11 Marine Magnesium Certified Standard Kit The HI783-11 Marine Magnesium Certified Standard Kit is used to validate the performance of the HI783 Marine Magnesium Checker HC. The kit includes one sealed cuvette with a zero-magnesium value and...

    Was: $24.99
    Now: $21.24
  • Seneye Cleaner Seneye Cleaner

    Seneye

    Seneye Cleaner

    Seneye Cleaner This seneye cleaner replenishes old and tired looking kit to make it look like new. It is capable of removing even the hardest coralline algae and the hard mineral cake that can build up on kit. Using seneye cleaner is easy, just empty...

    $21.00
  • HYDROS 14 ft System Command Bus Cable

    HYDROS

    HYDROS 14 ft System Command Bus Cable

    HYDROS 14 ft System Command Bus Cable This HYDROS System Command Bus Cable allows HYDROS devices to power and communicates with other HYDROS devices.  This is a DATA &  POWER cable that CAN supply power from unit to unit.  HYDROS 14 ft System...

    $20.99
  • HYDROS Control Power Supply

    HYDROS

    HYDROS Control Power Supply

    HYDROS Control Power Supply Allows you to power the HYDROS Control.   This power adapter is NOT compatible with the HYDROS WaveEngine or the IceCap Dual Pump Controller. This version comes with a HYDROS Terminator already installed.  This is...

    $19.99
  • Kamoer X1PRO/HYDROS Dosing Pump Power Supply Kamoer X1PRO/HYDROS Dosing Pump Power Supply Kamoer X1PRO/HYDROS Dosing Pump Power Supply

    HYDROS

    Kamoer X1PRO/HYDROS Dosing Pump Power Supply

    Kamoer X1PRO/HYDROS Dosing Pump Power Supply This is a direct replacement power supply for the following liquid dosing pump models: Kamoer X1 PRO (WiFi) CoralVue HYDROS Doing Pump Power Adapter Input: 100-240VACPower Adapter Output: DC12v- 1A

    $19.99
  • Neptune Systems DC24 Extension Cable - 10 ft.

    Neptune Systems

    Neptune Systems DC24 Extension Cable - 10 ft.

    Neptune Systems DC24 Extension Cable - 10 ft. This is a ten foot Male/Female extension cable that will enable you to remotely locate DC24 accessories like the PMUP. The DC24 cable is a product in the Neptune Apex AquaController System line and is...

    $19.99
  • 28ppt Salinity Calibration Fluid (250mL)

    CoralVue

    28ppt Salinity Calibration Fluid (250mL)

    28ppt Salinity Calibration Fluid (250mL) Low Range 28 PPT Seawater Reference For precise calibration of refractometers, hydrometers, and salinity/conductivity equipment, CoralVue Salinity Reference Solution is highly recommended. This solution, denoted...

    $16.99
  • 35ppt Salinity Calibration Fluid (250mL) 35ppt Salinity Calibration Fluid (250mL)

    CoralVue

    35ppt Salinity Calibration Fluid (250mL)

    35ppt Salinity Calibration Fluid (250mL) High Range 35 PPT Seawater Reference For precise calibration of refractometers, hydrometers, and salinity/conductivity equipment, CoralVue Salinity Reference Solution is highly recommended. This solution,...

    $16.99
  • Salifert Flat Worm Exit

    Salifert

    Salifert Flat Worm Exit

    Salifert Flat Worm Exit.Salifert Flatworm Exit is a safe solution to get rid of flatworms in your tank. It is perfectly harmless for the reef inhabitants, both fish and invertebrates, but definitely deadly for the flatworms. Flatworm body juice can...

    $16.95
  • Salifert Magnesium Test Kit

    Salifert

    Salifert Magnesium Test Kit

    Salifert Magnesium Aquarium Test KitMagnesium is present in NSW in a fairly high concentration (1300 - 1400 mg/L). Magnesium is an essential part of chlorophyll, which is necessary for photosynthesis. Without photosynthesis plants, including algae...

    Was: $19.59
    Now: $16.65
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