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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.

  • White Aquarium Controller Board Wire Management System White Aquarium Controller Board Wire Management System White Aquarium Controller Board Wire Management System White Aquarium Controller Board Wire Management System White Aquarium Controller Board Wire Management System

    HYDROS

    White Aquarium Controller Board Wire Management System

    White Aquarium Controller Board Wire Management System The CoralVue Aquarium Controller Board is a black wall-mountable wire management system for aquarium equipment. Easily mount and display all types of controllers, modules, and dosers cleanly and...

    $139.99
  • Milwaukee MC110 pH Monitor, Set Point 3.5-7.5pH Milwaukee MC110 pH Monitor, Set Point 3.5-7.5pH Milwaukee MC110 pH Monitor, Set Point 3.5-7.5pH Milwaukee MC110 pH Monitor, Set Point 3.5-7.5pH

    Milwaukee Instruments

    Milwaukee MC110 pH Monitor, Set Point 3.5-7.5pH

    Milwaukee MC110 pH Monitor, Set Point 3.5-7.5pH. Description The Miwaukee MC110 PRO Mid Range pH monitor offer lab grade accuracy with an easily viewable continuous check on pH levels with alarms. Design features Fast easy to read results with large...

    $139.15
  • 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
  • Milwaukee MC310 EC Conductivity Monitor.

    Milwaukee Instruments

    Milwaukee MC310 EC Conductivity Monitor

    Milwaukee MC310 EC Conductivity Monitor. The MC Monitors are designed to continuously monitor pH, EC or TDS values directly in your reservoir. Each unit features a user selectable set-point. An LED visual alarm is activated and flashes when the pH, EC...

    $139.15
  • Milwaukee MC410 TDS Monitor

    Milwaukee Instruments

    Milwaukee MC410 TDS Monitor

    Milwaukee MC410 TDS Monitor. The MC Monitors are designed to continuously monitor pH, EC or TDS values directly in your reservoir. Each unit features a user selectable set-point. An LED visual alarm is activated and flashes when the pH, EC or TDS level...

    $139.15
  • IceCap 2K Gyre Flow Pump Only IceCap 2K Gyre Flow Pump Only IceCap 2K Gyre Flow Pump Only IceCap 2K Gyre Flow Pump Only IceCap 2K Gyre Flow Pump Only

    IceCap

    IceCap 2K Gyre Flow Pump Only

    IceCap 2K Gyre Flow Pump Only The IceCap Gyre is back and better than ever! The all-new IceCap 2K Gyre Flow Pump is more powerful than its 1K predecessor. Gyre 2K Pump Features & Benefits Unique Gyre Flow: Virtually Eliminates Dead Spots Evenly...

    $138.59
  • HYDROS 2" Flow Sensor HYDROS 2" Flow Sensor HYDROS 2" Flow Sensor

    HYDROS

    HYDROS 2" Flow Sensor

    HYDROS 2" Flow Sensor Flow Range: 200-4050gphWire Length: 8ft Includes schedule 80 PVC Unions Monitor Passing Water Flow The HYDROS Flow Sensors are easy-to-install flow meters that communicate to the HYDROS app the flow rate of water passing through...

    $137.49
  • 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 LLS Liquid Level Sensor - 35 Inch Neptune Systems LLS Liquid Level Sensor - 35 Inch Neptune Systems LLS Liquid Level Sensor - 35 Inch

    Neptune Systems

    Neptune Systems LLS Liquid Level Sensor - 35 Inch

    Neptune Systems LLS Liquid Level Sensor - 35 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...

    $129.99
  • HYDROS 1 1/2" Flow Sensor HYDROS 1 1/2" Flow Sensor HYDROS 1 1/2" Flow Sensor HYDROS 1 1/2" Flow Sensor

    HYDROS

    HYDROS 1 1/2" Flow Sensor

    HYDROS 1 1/2" Flow Sensor Flow Range: 100-2500gphWire Length: 8ft Includes schedule 80 PVC Unions Monitor Passing Water Flow The HYDROS Flow Sensors are easy-to-install flow meters that communicate to the HYDROS app the flow rate of water passing...

    $120.11
  • 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
  •  Pinpoint Salinity Monitor

    Pinpoint - American Marine

    Pinpoint Salinity Monitor

    Pinpoint Salinity Monitor by American MarinePINPOINT Salinity Monitor™ will accurately and immediately measure the amount of salt in any marine or freshwater system. The reading is fully temperature compensated, which is difficult or...

    $119.95
  • Red Sea ReefSense ORP Probe

    Red Sea

    Red Sea ReefSense ORP Probe

    Red Sea ReefSense ORP Probe The digital ReefSense ORP probe can be connected to the ReefControl Lite or Pro controllers, providing real-time monitoring, notifications and logs. It can also be configured to automatically control DC equipment or AC...

    $119.00
  • Red Sea ReefSense pH & Temp Probe

    Red Sea

    Red Sea ReefSense pH & Temp Probe

    Red Sea ReefSense pH & Temp Probe The ReefSense pH & Temperature probe can be connected to the ReefControl Lite or Pro controllers, providing real-time monitoring, notifications, and logs. Both the pH and temperature readings can be used...

    $119.00
  • Seneye Active Extension Cable Accessory (15m) Seneye Active Extension Cable Accessory (15m) Seneye Active Extension Cable Accessory (15m) Seneye Active Extension Cable Accessory (15m) Seneye Active Extension Cable Accessory (15m)

    Seneye

    Seneye Active Extension Cable Accessory (15m)

    Seneye Active Extension Cable Accessory (15m) Is your seneye device far away from your PC? With the seneye Active Extender your PC can be over 15m from your aquarium or pond. The seneye Active USB extension is designed to allow cable lengths over and...

    $119.00
  •  Pinpoint Conductivity Monitor

    Pinpoint - American Marine

    Pinpoint Conductivity Monitor

    Pinpoint Conductivity Monitor by American MarinePINPOINT Conductivity Monitor™ is an instrument for the measurement of hardness in freshwater. The conversions are 33 µS=17.9 ppm=1dH. Good quality reverse osmosis water measures 5–15...

    $117.95
  • HYDROS Controller Board LED Sign - Black HYDROS Controller Board LED Sign - Black

    HYDROS

    HYDROS Controller Board LED Sign - Black

    HYDROS Controller Board LED Sign - Black Set-Off your Controller Display Board with a HYDROS LED Sign The HYDROS LED Controller Board Sign easily mounts to the CoralVue Aquarium Controller Boards. Add a custom HYDROS-branded look to your controller...

    $114.99
  • 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
  • Neptune Systems LLS Liquid Level Sensor - 23 Inch Neptune Systems LLS Liquid Level Sensor - 23 Inch Neptune Systems LLS Liquid Level Sensor - 23 Inch

    Neptune Systems

    Neptune Systems LLS Liquid Level Sensor - 23 Inch

    Neptune Systems LLS Liquid Level Sensor - 23 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...

    $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
  • IceCap Salinity/Temperature Digital Pocket Tester v3 IceCap Salinity/Temperature Digital Pocket Tester v3

    IceCap

    IceCap Salinity/Temperature Digital Pocket Tester v3

    IceCap Salinity/Temperature Digital Pocket Tester v3 The IceCap Digital Pocket Tester is a portable, rugged, water resistant device that utilizes electric conductivity to determine the specific gravity/salinity of natural and artificial seawater...

    $92.39
  • Tropic Marin ICP Water Analyses - 3 Pack Tropic Marin ICP Water Analyses - 3 Pack

    Tropic Marin

    Tropic Marin ICP Water Analyses - 3 Pack

    Tropic Marin ICP Water Analyses - 3 Pack Description Professional ICP seawater laboratory analysis - ICP-OES is used to analyze over 35 chemical elements in the seawater sample.After the measurement, the user can call up the detailed analysis report on...

    $90.45
  • HYDROS 2mL/min Dosing Pump HYDROS 2mL/min Dosing Pump HYDROS 2mL/min Dosing Pump HYDROS 2mL/min Dosing Pump

    HYDROS

    HYDROS 2mL/min Dosing Pump

    HYDROS 2mL/min Dosing Pump The HYDROS 2mL/min Dosing Pump is a simple and affordable pump for automating the addition of liquid supplements, trace elements, and two-part solutions to an aquarium. Connect the power of the dosing pump to any simple timer...

    $90.08
  • OVERSTOCK - Hanna Instruments Marine Salinity Tester OVERSTOCK - Hanna Instruments Marine Salinity Tester OVERSTOCK - Hanna Instruments Marine Salinity Tester OVERSTOCK - Hanna Instruments Marine Salinity Tester OVERSTOCK - Hanna Instruments Marine Salinity Tester

    Hanna Instruments

    OVERSTOCK - Hanna Instruments Marine Salinity Tester

    OVERSTOCK - 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...

    Was: $99.99
    Now: $89.99
  • 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
  • HYDROS 1" Flow Sensor HYDROS 1" Flow Sensor HYDROS 1" Flow Sensor HYDROS 1" Flow Sensor

    HYDROS

    HYDROS 1" Flow Sensor

    HYDROS 1" Flow Sensor Flow Range: 50-1500gphWire Length: 8ft Includes schedule 80 PVC Unions Monitor Passing Water Flow The HYDROS Flow Sensors are easy-to-install flow meters that communicate to the HYDROS app the flow rate of water passing through...

    $75.06
  •   Hanna HI700 Ammonia Checker - Low range - Freshwater   Hanna HI700 Ammonia Checker - Low range - Freshwater   Hanna HI700 Ammonia Checker - Low range - Freshwater   Hanna HI700 Ammonia Checker - Low range - Freshwater

    Hanna Instruments

    Hanna HI700 Ammonia Checker - Low range - Freshwater

    Hanna Ammonia Checker, Low range HI700 The all new HI 700 Checker Ammonia LR for fresh water can be used in place of HI 3824 or HI 38049 fresh water test kits. The  Checker®HC is a simple, accurate, and cost effective way to measure low ranges...

    $74.99
  •  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
  • Hanna Phosphorous Checker, Ultra Low Range HI736 Hanna Phosphorous Checker, Ultra Low Range HI736 Hanna Phosphorous Checker, Ultra Low Range HI736

    Hanna Instruments

    Hanna HI736 Phosphorous Checker, Ultra Low Range

    Hanna Phosphorous Checker, Ultra Low Range HI736 The HANNA HI 736 Checker HC bridges the gap between simple chemical test kits and professional instrumentation. The HANNA HI?736 is both accurate and affordable. The HI 736 CheckerHC portable handheld...

    $74.99
  •  Hanna HI764 Nitrite Checker, Ultra Low Range  Hanna HI764 Nitrite Checker, Ultra Low Range  Hanna HI764 Nitrite Checker, Ultra Low Range  Hanna HI764 Nitrite Checker, Ultra Low Range

    Hanna Instruments

    Hanna HI764 Nitrite Checker, Ultra Low Range

    Hanna Nitrite Checker, Ultra Low Range HI764 The HANNA HI 764 Checker HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate while professional instrumentation can cost hundreds of...

    $74.99
  •  Hanna HI774 Ultra Low Range Phosphate Checker - Marine  Hanna HI774 Ultra Low Range Phosphate Checker - Marine

    Hanna Instruments

    Hanna HI774 Ultra Low Range Phosphate Checker - Marine

    Hanna HI774 Ultra Low Range Phosphate Checker - Marine Our HI774 Ultra Low Range Phosphate Checker will be essentially the same specifications as the HI736 Ultra Low Range Phosphorus Checker however it will not require a conversion but read directly in...

    $74.99
  •  Hanna HI780 Marine pH Checker  Hanna HI780 Marine pH Checker  Hanna HI780 Marine pH Checker

    Hanna Instruments

    Hanna HI780 Marine pH Checker

     Hanna HI780 Marine pH Checker Get accurate water testing results with the HI780 Marine pH Colorimeter. With a digital read out, there is no more struggling to determine colors visually. This pH tester's compact design fits in your pocket or stores...

    $74.99
  • Hanna HI718 Iodine Checker Hanna HI718 Iodine Checker Hanna HI718 Iodine Checker

    Hanna Instruments

    Hanna HI718 Iodine Checker

    Hanna Iodine Checker HI718 ***FRESHWATER ONLY*** Hanna Iodine Checker HI718 is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the instrument, press the button and read...

    $74.99