Water temperature is an important factor in keeping tank inhabitants healthy. JBJ floating glass thermometer sticks on the inside of...

The HI96822 is a rugged, portable digital refractometer designed for the measurement of salinity of natural or artificial seawater. The...

AQUA Lifter Pump High Pressure (Brushless) - Not a standalone unit.  Requires an Autoaqua unit to run.   Model: LP-1800...

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

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

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

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

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

New to the leak detector offerings is the Optical Multi Surface Leak Sensor (LD-3).  This is a weighted sensor that...

This is a ten foot Male/Female extension cable that will enable you to remotely locate DC24 accessories like the PMUP....

HYDROS WaveEngine Power Supply Replacement power supply for the HYDROS WaveEngine ONLY.     WARRANTY CoralVue, Inc. and HYDROS hereby...

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

Cuvet cleaning solution (230 mL)

The HI764-25 are high quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their...

Stop struggling to get accurate results for your saltwater aquarium with our simple handheld colorimeter. Our nitrite colorimeter fills the...

HYDROS Rope Leak Sensor Extension Extend to your HYDROS Rope Leak Sense Port Accessory   The HYDROS Rope Leak Detection...

The HYDROS WaveEngine APX Link allows you to connect the WaveEngine's 0-10V input port directly to a third-party aquarium controller...

Optical Level Sensor  (OS-1) With Magnetic Mount This sensor plugs into your FMM and, using reflected infrared light, will signal...

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

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

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

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

Feed your fish consistently, and safely, while you are home OR away! A key component of caring for aquatic animals...

Lunar LED String – 4 LEDs Use this string of LEDs in combination with your Lunar Simulation Module When you...

Lunar LED String – 2 LEDs Use this string of LED in combination with your Lunar Simulation Module When you...

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

2 Channel AquaSurf or Apex to stream cable assembly. It has 1 RJ45 connector which plugs into the Apex base...

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

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

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

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

The Kraken introduces a new concept in aquarium controllers and provides high-power 24V DC switched outputs and a large heavy-duty...

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

The HYDROS Control X3 Pro Pack includes the Control X3 & XP8 aquarium controllers, HYDROS App, temperature sensor, pH probe...

Reef Octopus Octo Pulse 4 Flow Pump With WaveEngine LE Controller Max Flow: 4,500gph | 11~32watts | 80 - 500+...

Achieve Ultimate Aquarium Control with the HYDROS Control 4 Starter Pack This starter kit includes all essential equipment needed to...

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

Control the pH of your tank/reservoir AUTOMATICALLY! The MC122 pH controller and dosing pump (MP810) provides fully automated pH control...

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

Includes the Seneye Dri box and SWS Wifi Units Are your corals not as vibrant as you expect? Have you...

Are your corals not as vibrant as you expect? Have you ever had an aquarium crash unexpectedly? Now with the...

PINPOINT pH Controller" is an inexpensive yet rugged controller, which includes the appropriate probe and calibration fluids. This device will...

pH 55 Specifications Range -2.0 - 16.0 pH Resolution 0.1 pH Accuracy  0.1 pH ATC Automatic Calibration 2 Points -...

Smart Professional pH/ORP controller. User selectable Hi/Low Set Point Manual 2 points calibration Visual LED alarm Supplied with 12 VDC...

The HI 98129 Combo waterproof tester offer high accuracy pH, EC/TDS and temperature measurements in a single tester! No more...

NEW OPEN BOX RETURN - Brand new item, plastic has been removed from unit but doesn't appear to have ever...

NEW OPEN BOX RETURN  - New Condition, was water tested. SAVE 20% Red Sea’s Seawater Refractometer offers exceptional accuracy, for...

The ITC Reefculture M-Rack Probe Holder Plate is made from the highest quality CNC-cut glossy black acrylic. Holds up to...

The ITC Reefculture M-Rack Dosing Line Plate is made from the highest quality CNC-cut glossy black acrylic.    Requires 2x...

M-Rack: One Magnet, Endless Possibilities M-Rack is a versatile magnetic mounting system for your aquarium. It brings a stylish, practical...

OPEN BOX RETURN - Save 15% Professional pH monitor especially designed for use with aquariums. User selectable Hi/Low Set Point...