The pH and ORP probes are now double-junction as well so they hold calibration longer and have a longer lifespan...

Do you have a Reef Brite LED or Lumi Lite LED fixture you would like to control with your APEX...

The seneye+ includes the disposable seneye slide, e-mail alerts, automatic online graphing, and personalised advice. Activating your seneye+ is really...

The little new product we promised. It may be little, but it has been in demand for a long time....

Leak Detection Probe for solid surfaces  (LD-2) Plug this probe into your FMM and then place it on any surface...

Red Sea Magnesium Pro - Reagent Refill Kit

Breakout Box Connect external switches and I/O Inputs to your Apex When connected to the I/O Port of your Apex,...

Smart Professional ORP controller. User selectable Hi/Low Set Point Visual LED alarm Supplied with 12 VDC adapter 1 power plug...

MA957 CO2 Solenoid Diaphragm ValveIncludes flow regulator, needle valve, electronic solenoid & bubble counter. Unit comes with dual gauges each...

Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode...

Features: Large Face Digital Thermometer Displays inside (room) and outside (aquarium or greenhouse) temperature Degree F or Degree C (accuracy...

The only salt water Alkalinity Tester at this price! Easier to use and more accurate than chemical test kits Colorimetric...

Octopus Ground Probe Highly recommended for all aquariums to prevent stray voltage from affecting marine animals.

Probe holder can fit up to four probes. Its design to hold ph, ORP, salinity and/or temp probe. It has...

Understanding Lighting with the PARwise PRO The PARwise PRO is an advanced light meter that revolutionizes aquarium lighting management. Its...

TECOnnect WIFI MODULE      Compatible with ALL TK-500, TK-1000, TK-2000 The TECOnnect wifi module is an easy to install...

Includes the Trident NP + 2 Month NP Reagents Trident NP The best selling automated tester ever released has been...

This HYDROS Force Port Adapter Cable (72 inches long) is designed to directly connect the Kraken to power popular 24V...

Mount Controllers and Hide Cords Like a Pro (Controllers sold separately) The CoralVue Aquarium Mini Controller Board is a wall-mountable...

Upgrade kit will not include magnet mount.  It is meant to be installed where the ato float switch is installed...

CoralVue HYDROS Sense Port Accessory   The HYDROS Flow Sensors are easy-to-install and measure the flow rate of water passing...

Hanna Marine 981520 Monitor  Marine Monitor pH, Marine Salinity and Temperature Testing and monitoring salinity in saltwater aquariums is an...

Introducing the Custom Cradle Pro Magnetic Tube Holder   Holds up to 4 Tubes   A magnetically mounted probe holder...

HYDROS Control XS (CONTROLLER ONLY) Control XS is an artificially intelligent aquarium assistant that is focused on Sensors. Don’t let...

HYDROS Rope Leak Sensor Cable ONLY. Part of set     WARRANTY CoralVue, Inc. and HYDROS hereby guarantee this product...

Please note: CONTROL 4 ONLY - Nothing else is included.   Achieve Ultimate Aquarium Control with the HYDROS Control 4...

Flow Sensor – 1/4″ with push-fit connectors  (FS-25) Usually used with aquarium accessories like RODI inputs, calcium reactor feed lines...

This is a ten foot Male/Female extension cable for the 1Link. To extend the WAVs

1LINK – EASY, ONE-CLICK INSTALLATION   The WAV is the first of a line of aquarium products from Neptune Systems...

Calcium Pro Test Kit Advanced calcium titration test Ca   Red Sea’s Calcium Pro Test Kit is an advanced calcium...

Have the Apex take control of your variable speed pumps and do things you never could imagine with a stock...

2 Channel light dimming cable for Apex variable speed ports. It has 1 RJ45 connector on one end of the...

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

To be used with cuvets (item number HI-731331, not for photometer cuvets)for photometers and turbidity meters. They are notched to...

The HI731321 are the replacement glass cuvettes used with the HI7XX Checker HC colorimeters and the HI832XX benchtop photometers. Each...

SeaTest Ca - Saltwater Calcium is one of the most important elements in a marine aquarium because many corals, other...

SeaTest KH -  Saltwater Bicarbonates (KH) buffer the water against pH changes. But via biological processes in the water the...

Hydrps Diaphragm Water Pump The HYDROS Diaphragm Pump is a small 12V Drive Port accessory that uses positive external displacement...

Control and Monitor your Aquarium with ease    Built in WiFi, key parameter monitoring, and reliable equipment control. Regular automated...

Reef Kinetics Reefbot Replacement Tubes 2 Meters Silicon Tubes (Set of 3)

Never before offered in the aquarium industry the LLS Sensors allow for the measurement of water depth in inches or...

Never before offered in the aquarium industry the LLS Sensors allow for the measurement of water depth in inches or...

Red Sea MCP Magnesium Test - 75 tests Accurate measurement of Magnesium in marine aquariums Mg   Red Sea’s user-friendly...

Red Sea MCP Ammonia Test - 100 tests Accurate measurement of ammonia in marine aquariums NH3 | NH4   Red...

CoralVue HYDROS CO2 Solenoid Valve The HYDROS DC CO2 Solenoid Valve is the ideal solution for controlling the CO2 flow...

Hanna 10 mL syringe with Luer lock

The Marine pH Checker® HC® Calibration Check Set - HI780-11 provides a simple solution to validating the Marine pH Checker®...

Same as most digital meters, this meter apply a work theory which is measuring the liquid conductance to determine its...

Neptune Systems Aquabus Cable - 30' M/M AQUABUS CABLES WHAT ARE THEY? Aquabus is the communication link between your Apex...

Aquabus 30′ Extension Cable This is a thirty foot Male/Female Aquabus cable that is used as an extension cable to...