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Controllers & Testing

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.

480 of 502 Items
  • 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
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  • Salifert Test Kit Silicate Salifert Test Kit Silicate

    Salifert

    Salifert Test Kit Silicate

    Salifert Test Kit Silicate Silicate occurs especially in tap water or in purified water when the RO or DI unit is not functioning properly. Silicate not only results in diatom bloom but might also block some essential trace elements such as vanadium and...

    $16.95
    Sold Out - More on the way
  • Salifert Ammonia Test Kit

    Salifert

    Salifert Ammonia Test Kit

    Salifert Ammonia Test Kit Ammonia and ammonium are substances which should be converted rapidly into nitrite followed by nitrate and nitrogen gas. If this does not happen then the aquarium is not fully cycled or biological processes are not proceeding as...

    $16.49
    Sold Out - More on the way
  • HYDROS iV Light Shield HYDROS iV Light Shield

    HYDROS

    HYDROS iV Light Shield

    HYDROS iV Light Shield HYDROS iV slip-on shield that protects the testing beaker from light contact. Shield Your iV Beaker From Light This slip-on shield protects the HYDROS iV testing beaker from light contact which could promote organic growth...

    $15.99
    Sold Out - More on the way
  • HYDROS WaveEngine 0-10V Quad Cable HYDROS WaveEngine 0-10V Quad Cable

    HYDROS

    HYDROS WaveEngine 0-10V Quad Cable

    HYDROS WaveEngine 0-10V Quad Cable Some pumps do not lend themselves to direct drive control with the WaveEngine due to cabling or other restrictions, but many of these pumps do offer 0-10V controllability. This 0-10V HYDROS WaveEngine Quad Cable...

    $15.58
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  • HYDROS WaveEngine APX Link HYDROS WaveEngine APX Link

    HYDROS

    HYDROS WaveEngine APX Link

    HYDROS WaveEngine APX Link The HYDROS WaveEngine APX Link allows you to connect the WaveEngine's 0-10V input port directly to a Neptune Systems Apex aquarium controller (rather than using an outlet) so you can remotely control the WaveEngine from Apex...

    $15.58
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  • API Ammonia Test Kit for Fresh or Saltwater API Ammonia Test Kit for Fresh or Saltwater

    API

    API Ammonia Test Kit for Fresh or Saltwater

    API Test Kit Ammonia for Fresh or Saltwater.Ammonia, constantly released into the aquarium, is the number one killer of tropical fish. Fast, easy and accurate, this test kit measures ammonia levels from 0 to 7 ppm.  API Test Kit Ammonia for Fresh or...

    $15.48
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  • HYDROS Door (REED) Switch (0-10V) HYDROS Door (REED) Switch (0-10V) HYDROS Door (REED) Switch (0-10V) HYDROS Door (REED) Switch (0-10V)

    HYDROS

    HYDROS Door (REED) Switch (0-10V)

    HYDROS Door (REED) Switch (0-10V) Allows you to add a sensor to your cabinet door and be able to trigger an event such as sound an alarm or turn ON the cabinet lights.   For a full set of instructions, please visit: Sensing distance: 10mm-15mm...

    $15.00
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  • HYDROS Flow Sensor 3/4-inch Union HYDROS Flow Sensor 3/4-inch Union

    HYDROS

    HYDROS Flow Sensor 3/4-inch Union

    HYDROS Flow Sensor 3/4-inch Union Replacement PVC Union (BSPP Pipe Thread to slip) designed for the HYDROS Flow Sensors. Note that this does not feature a US standard NPT thread and is incompatible with items that require one. Available Unions: HYDROS...

    $14.99
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  • API Phosphate Test Kit API Phosphate Test Kit

    API

    API Phosphate Test Kit

    API Phosphate Test Kit.Tests tap water & fresh or saltwater aquariums for carbonate hardness (KH). Can be used to determine the proper dose of pH buffers.    API Phosphate Test Kit.Tests tap water & fresh or saltwater aquariums...

    $14.98
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  • Seneye Car Power Adapter Seneye Car Power Adapter Seneye Car Power Adapter

    Seneye

    Seneye Car Power Adapter

    Seneye Car Power Adapter The car power adaptor allows you use your seneye in data logging mode whilst on the move, it is ideal when you are moving any livestock, plants or coral on long journeys, especially for large koi or the odd shark, where ammonia...

    $14.69
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  • Seneye Parts Pack Seneye Parts Pack Seneye Parts Pack Seneye Parts Pack

    Seneye

    Seneye Parts Pack

    Seneye Parts Pack When you loose a part or they start to look old its nice when you can buy new ones. This pack contains a new black suction cup and black back cover. The only two parts on your seneye you can loose or replace.Seneye Parts Pack When you...

    $14.69
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  • Seneye Slide Soaker Seneye Slide Soaker Seneye Slide Soaker

    Seneye

    Seneye Slide Soaker

    Seneye Slide Soaker The slide soaker makes wetting your new seneye + slide even easier and quicker. It’s simple to use just place a new seneye slide into the soaker and clip it up. Fix the suction cup and stick it the inside of your tank just...

    $14.69
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  • HYDROS IceCap Gyre WaveEngine Pump Adapter HYDROS IceCap Gyre WaveEngine Pump Adapter

    HYDROS

    HYDROS IceCap Gyre WaveEngine Pump Adapter

    HYDROS IceCap Gyre WaveEngine Pump Adapter Direct Pump Driver - For many pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps.HYDROS IceCap Gyre WaveEngine Pump...

    $14.43
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  • HYDROS Maxspect Gyre XF130/230 WaveEngine Pump Adapter HYDROS Maxspect Gyre XF130/230 WaveEngine Pump Adapter

    HYDROS

    HYDROS Maxspect Gyre XF130/230 WaveEngine Pump Adapter

    HYDROS Maxspect Gyre XF130/230 WaveEngine Pump Adapter Direct Pump Driver - For many pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps.HYDROS Maxspect Gyre...

    $14.43
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  • HYDROS Maxspect Gyre XF330/350 WaveEngine Pump Adapter HYDROS Maxspect Gyre XF330/350 WaveEngine Pump Adapter

    HYDROS

    HYDROS Maxspect Gyre XF330/350 WaveEngine Pump Adapter

    HYDROS Maxspect Gyre XF330/350 WaveEngine Pump Adapter Direct Pump Driver - For many pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps.HYDROS Maxspect Gyre...

    $14.43
    Add to Cart
  • API Nitrate Test Kit for Fresh or Saltwater API Nitrate Test Kit for Fresh or Saltwater

    API

    API Nitrate Test Kit for Fresh or Saltwater

    API Test Kit Nitrate for Fresh or Saltwater.Measures nitrate levels in both fresh & saltwater aquariums. Tests nitrate levels from 0 to 160 ppm. 90 tests per kit.  API Test Kit Nitrate for Fresh or Saltwater.Measures nitrate levels in both fresh...

    $13.98
    Add to Cart
  • API Calcium Test Kit API Calcium Test Kit

    API

    API Calcium Test Kit

    API Calcium Test Kit.Calcium is one of the most important elements in a reef aquarium. Reef invertebrates such as corals, crustaceans, mollusks and even some types of encrusting algae need calcium to grow and remain healthy. Over time, calcium levels...

    $13.98
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  • Hikari Accuprobe Hydrometer

    Hikari

    Hikari Accuprobe Hydrometer

    Hikari Accuprobe Hydrometer Features "Dry Hands" design avoids contamination of aquarium or water sample Takes a more "True" water sample at a 6" depth avoiding inaccurate surface sampling Accurate to +/- 0.001 specific gravity units Wide range of...

    $13.95
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  • Seaside Probe Holder Seaside Probe Holder

    Seaside

    Seaside Probe Holder

    Seaside Probe Holder Holder can fit up to four probes. It’s design to fit ph, ORP, salinity and/or temp probe. This probe holder can also hold regular air line tubing for dosing pump or calcium reactor output. The holder can be mount on the sump...

    Was: $14.95
    Now: $13.46
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  • Neptune Trident Drip Tray

    Neptune Systems

    Neptune Trident Drip Tray

    Neptune Trident Drip Tray While drips and spills from the Trident are uncommon, this custom-fit tray offers peace of mind by catching any minor leaks that may occur. Designed specifically for the Trident and Trident NP, it helps keep your aquarium stand...

    $12.99
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  • API Freshwater pH Test Kit API Freshwater pH Test Kit

    API

    API Freshwater pH Test Kit

    API Freshwater pH Test KitpH is the measure of acidity of water. A pH reading of 7.0 is neutral. A pH higher than 7.0 is alkaline, and a pH lower than 7.0 is acidic. Maintaining the aquarium at the proper pH ensures optimal water quality. The pH...

    $12.98
    Add to Cart
  • Fluval Sea Hydrometer Fluval Sea Hydrometer

    Fluval

    Fluval Sea Hydrometer

    Fluval Sea Hydrometer Fluval Sea Hydrometer provides an accurate and convenient method of measuring specific gravity and salt level in marine aquariums. Regular testing is strongly recommended as stable salinity levels are essential for the health of...

    $12.95
    Add to Cart
  • Simplicity Float Switch Kit for Dosing Container (1-Pack)

    Simplicity

    Simplicity Float Switch Kit for Dosing Container (1-Pack)

    Simplicity Float Switch Kit for Dosing Container (1-Pack) Our float switch kits are designed to create an alert whenever a solution starts to run low in your dosing container. Each float switch is five feet in length and requires the use of an aquarium...

    $12.95
    Add to Cart
  • Salifert Nitrite Test Kit

    Salifert

    Salifert Nitrite Test Kit

    Salifert Nitrite Aquarium Test KitNitrite is a substance that is toxic to fish and invertebrates. It is a misconception that once a tank is through its cycle (first 3 or 4 weeks) that nitrite has vanished.Many nitrite test kits suffer from interference...

    $12.89
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  • Kamoer X1/F1 - HYDROS Dosing Pump Mount Kamoer X1/F1 - HYDROS Dosing Pump Mount Kamoer X1/F1 - HYDROS Dosing Pump Mount Kamoer X1/F1 - HYDROS Dosing Pump Mount

    Kamoer

    Kamoer X1/F1 - HYDROS Dosing Pump Mount

    Kamoer X1/F1 - HYDROS Dosing Pump Mount Mount is compatible with Kamoer X1(Bluetooth), Kamoer F1, and HYDROS Single Dosing Pump. Single Dosing Pump Mounting Bracket Simple snap-fit design surface mount bracket with integrated soft-touch pads, and...

    $12.59
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  • Red Sea ReefSense Single Probe Holder

    Red Sea

    Red Sea ReefSense Single Probe Holder

    Red Sea ReefSense Single Probe Holder A dedicated holder designed to cleanly and securely mount a single ReefSense probe (such as pH, Salinity, ORP, or Temperature) in your sump or aquarium, ensuring it stays in the optimal position for accurate readings...

    $12.50
    Sold Out - More on the way
  • Salifert pH Test Kit

    Salifert

    Salifert pH Test Kit

    Salifert pH Aquarium Test Kit The pH value can have a major impact on the growth of corals and calcareous algae and on many biological processes. The pH should not be allowed to fluctuate more than approx. 0.3 units during 24 hours and should preferably...

    $12.49
    Add to Cart
  • API Copper Test Kit API Copper Test Kit

    API

    API Copper Test Kit

    API Copper Test KitCopper, a common treatment for many parasitic infections, must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective, or can increase to a point that is detrimental to fish health...

    $12.48
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  • HYDROS 6 ft System Command Bus Cable HYDROS 6 ft System Command Bus Cable

    HYDROS

    HYDROS 6 ft System Command Bus Cable

    HYDROS 6ft System Command Bus Cable This 6ft long HYDROS System Command Bus Cable allows HYDROS devices to communicate and even provide power to the Control 2 and Control 4.  HYDROS 6ft System Command Bus Cable This 6ft long HYDROS System Command...

    $12.12
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  • HYDROS 9ft Drive Accessory Extension Cable HYDROS 9ft Drive Accessory Extension Cable HYDROS 9ft Drive Accessory Extension Cable

    HYDROS

    HYDROS 9ft Drive Accessory Extension Cable

    HYDROS 9ft Drive Accessory Extension Cable This 9ft long extension cable for HYDROS Drive Accessories for Control 2 and Control 4.  HYDROS 9ft Drive Accessory Extension Cable This 9ft long extension cable for HYDROS Drive Accessories for Control...

    $12.12
    Add to Cart
  • HYDROS 9ft Sense Accessory Extension Cable HYDROS 9ft Sense Accessory Extension Cable

    HYDROS

    HYDROS 9ft Sense Accessory Extension Cable

    HYDROS 9ft Sense Accessory Extension Cable This 9ft long extension cable for HYDROS Sense Accessories for Control 2 and Control 4.  HYDROS 9ft Sense Accessory Extension Cable This 9ft long extension cable for HYDROS Sense Accessories for Control...

    $12.12
    Add to Cart
  • API Nitrite Freshwater/Saltwater Test Kit API Nitrite Freshwater/Saltwater Test Kit

    API

    API Nitrite Freshwater/Saltwater Test Kit

    API Nitrite Freshwater/Saltwater Test Kit.Toxic nitrite is produced by nitrifying bacteria in the biological filter as it breaks down ammonia. This kit tests for harmful nitrite and measures levels from 0 to 5.0 ppm.  API Nitrite...

    $11.99
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  • API GH & KH Freshwater Test Kit API GH & KH Freshwater Test Kit

    API

    API GH & KH Freshwater Test Kit

    API GH & KH Freshwater Test Kit. Tests tap water and freshwater aquariums for general hardness (GH) and carbonate hardness (KH). Helps detect stress on fish caused by rapid pH shifts, which result from low KH levels and helps aquarists...

    $10.99
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  • Seachem Alerts Combo Pack Ammonia & PH Sensors Seachem Alerts Combo Pack Ammonia & PH Sensors

    Seachem

    Seachem Alerts Combo Pack Ammonia & PH Sensors

    Seachem Alerts Combo Pack Ammonia & PH Sensors No strips, no tests, just constant readings. Now Ammonia Alert and pH Alert come together! Ammonia Alert and pH Alert employ Seachem Sensor Technology; a sensor changes color reversibly to alert you to...

    $10.73
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  • Neptune Systems - 4 Meter Tubing for DOS Dosing System

    Neptune Systems

    Neptune Systems - 4 Meter Tubing for DOS Dosing System

    Neptune Systems - 4 Meter Tubing for DOS Dosing System Replacement Tubing for the Neptune DOS Dosing and Fluid Metering System If you need longer tubing for your DOS dosing system or DDR reservoirs. Extend the distance from your pump to the reservoirs,...

    $9.99
    Add to Cart
  • Pinpoint AC Adapter

    Pinpoint - American Marine

    Pinpoint AC Adapter

    PINPOINT AC Adapter Kit (110vac) is optional to replace the 9-volt battery, which some monitor owners find convenient, when monitoring full time. This AC Kit now contains special electronic filtering to avoid electrical interference that was...

    $9.99
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480 of 502 Items

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