Live Help Chat

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.

139 of 139 Items
  • 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
  • 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
    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
  • 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
    Add to Cart
  • 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 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
    Add to Cart
  • 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
    Sold Out - More on the way
  • 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
    Add to Cart
  • API High Range PH Test Kit for Saltwater API High Range PH Test Kit for Saltwater

    API

    API High Range PH Test Kit for Saltwater

    API Test Kit High Range PH for SaltwaterUse to measure pH changes in marine aquariums, aquariums with African cichlids, and very alkaline tap water. Reads the pH of water within the high range of 7.4 to 8.8. 160 tests per kit. API Test Kit High Range PH...

    $9.48
    Add to Cart
  • API KH Test Kit for Fresh or Saltwater API KH Test Kit for Fresh or Saltwater

    API

    API KH Test Kit for Fresh or Saltwater

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

    $8.99
    Add to Cart
  • Pinpoint Salinity Calibration Fluid 53.0mS / 1.026 SG Pinpoint Salinity Calibration Fluid 53.0mS / 1.026 SG

    Pinpoint - American Marine

    Pinpoint Salinity Calibration Fluid 53.0mS / 1.026 SG

    Pinpoint Salinity Calibration Fluid 53.0mS / 1.026 SG Insure a perfect reading with your American Marine Salinity Meter- This salinity calibration fluid sets your system at the precise reading you need. 53.0mSPinpoint Salinity Calibration Fluid 53.0mS /...

    $8.95
    Add to Cart
  • Seachem Ammonia Alert Sensor Seachem Ammonia Alert Sensor

    Seachem

    Seachem Ammonia Alert Sensor

    Seachem Ammonia Alert Ammonia Alert™ is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or...

    $8.26
    Add to Cart
  • pH Alert Sensor by Seachem

    Seachem

    pH Alert Sensor by Seachem

    pH Alert Sensor by Seachem.pH Alert is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH levels between 5.8 and 8.2. FRESHWATER ONLY. No...

    $6.95
    Add to Cart
  • 5 ml. Transfer Pipette

    EcoPlus

    5 ml. Transfer Pipette

    5 ml. Transfer Pipette Unbreakable all-in-one pipets eliminate the hazards of broken glass and exposure to infectious materials. Put an end to matching rubber bulb with glass pipet. Since entire unit is disposable, these pipets prevent...

    $0.49
    Add to Cart
139 of 139 Items

© 2026 AquaCave.com All rights reserved. | Sitemap