Controllers & Monitors

Tube Holder for Dosing / RO Tubing. Version may vary, see picture's

The Neptune Systems Probe Calibration Kit includes everything you need to calibrate your pH probe and salinity probe for reef tank conditions. The ...

American Marine PINPOINT pH Replacement Probe   Features : 10 foot cord Ag-Ag/Cl reference extended life high supression cable jacket. Can be us...

Neptune Apex Trident – Automated CA, KH & MG Testing for Serious Reefers. Reagents not included. Take your reef monitoring to the next level wi...

Neptune Systems Temperature Probe For Apex Controllers

What's the difference between double junction and single junction probes? Single junction probes put the reference electrode in direct contact with...

New Version 3! In stock as of June 5, 2019   ELIMINATE THE UNCERTAINTY ASSOCIATED WITH MECHANICAL REFRACTOMETERS The IceCap Digital Pocket Tester i...

Replacement Reagent Kit for Trident NP (2 Month Supply) Keep your Trident NP Nitrate and Phosphate Tester running smoothly by replacing your reagen...

Neptune Lab grade Conductivity (salinity) Probe Dual Range 0 to 999 us/cm or 0 to 99.9 ms/cm Lab quality probe w/10' cable Minidin 4 Connector

The Milwaukee Instruments "MC" Controllers have a user selectable set point and a visual "Power Activated" LED notification light. Power to the con...

The first expansion module, the PM1 , with a pH or ORP, temperature, and 6 digital inputs. The PM1 features are: Monitor/Control pH or ORP, and te...

Neptune Systems IO Breakout Box The IO Breakout Box allows the easy addition of water level float switches, water pressure and flow sensors, water ...

The pH600 is a pH tester can be used in many different applications and is considered an excellent starter unit for digital pH measurement. The ...

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 c...

A Simple Way to Organize Your Dosing Lines, RO tubing and Air line   The IceCap magnetic tube holder universally mounts tubing securely to most smo...

15’ Male/Male AquaBus cable.  Used to connect an AquaBus module (PM1, PM2, EB8, etc) to another AquaBus Module or Apex base unit.  ...

CATCH THE DRIP, BEFORE THE DISASTER!   Aquarium leaks are one of the most feared events for even the most seasoned aquarist – and for good reason. ...

The CoralVue HYDROS Auto Top-Off Kit Includes: HYDROS Triple Water Level Sensor (plugs into HYDROS Sense Port), HYDROS DC Micro Pump (plugs into HY...

Neptune Apex Controller Base Unit / "The Brain" now available separately!       Monitors your equipment – ensuring it is operating correctly at all...