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...

This HYDROS Force Port Power Cable is used to connect the Kraken to power a WaveEngine LE, WaveEngine, XD, or...

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

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

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

The Phosphate Ultra Low Range Checker® HC Calibration Check Set provides a simple solution to validating the Phosphate Ultra Low...

The HI93713-01 are reagents for the colorimetric determination of phosphate. There are enough reagents for 100 tests to be used...

Please note: Cable will vary from photo, stock photo shown. Hydros Tunze WE Pump Adapter Direct Pump Driver - For...

Control any pump via variable speed INPUT. Unlike other controllers that require intricate programming on pumps connected via 0-10V, the...

Please note: Cable will vary from photo, stock photo shown. Hydros Maxspect Gyre 330/350 WE Pump Adapter Direct Pump Driver...

20V AC to 12V DC Power Adapter for use on the AquaController 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....

    SALINITY/CONDUCTIVITY PROBE- LAB GRADE Start Measuring Salinity or Conductivity in your tank.  Get alerts when those values are...

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

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

Isolation is the Key to Accurate Tests About HYDROS iV PRO Drive Port Accessory To obtain precise pH and conductivity...

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

Trident NP (Reagents sold separately) The best selling automated tester ever released has been modified to now test Nitrates and...

The Control X10 is the ultimate HYDROS system controller with twin Drive ports, four Sense ports, a pH/ORP port, a...

Simplify the Way We Manage Flow Within Our Aquariums The HYDROS WaveEngine v2 can control, monitor, and even supply power...

The HYDROS Control X4 PRO Pack includes the Control X4 & XP8 aquarium controllers, HYDROS App, temperature sensor, pH probe...

Please note: CONTROL X3 ONLY - Nothing else is included. Achieve Ultimate Aquarium Control with the HYDROS Control X3 The...

It doesn’t just make SENSE, it Controls too! The HYDROS Control XS Starter Kit is the ideal solution for small...

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

Neptune Apex Display Module

PINPOINT ORP Monitor" will measure the ORP (oxidation-reduction potential, or REDOX) of your system. It is popular with those who...

With Milwaukee's MC Controllers you can monitor and control pH and/or ORP levels.    The Milwaukee Instruments "MC" Controllers have...

Get your replacement reagents for your HI781 Marine Nitrate Low Range Colorimeter today. These high-quality reagents are manufactured in our...

A Great Start in Aquatic Monitoring and Control  The HYDROS Start is the perfect first aquarium controller, expertly designed to...

Red Sea MCP Calcium Test - 75 tests User-friendly titration test provides a quick and reliable measurement of calcium in...

Six Pack of Reef ICP Water Tests The Fauna Marin Reef ICP Test (6 Pack) gives a quick and easy...

Easy to Read Dymax RF-20 Sea Water Refractometer Salinity refers to the amount of salt concentration in water. Different salt...

Effortless Water Testing The IceCap Magnetic Aquarium Test Kit Mixer is a simple solution for efficiently mixing water test reagents....

Reef Kinetics Reefbot Replacement Filters

ELIMINATE THE UNCERTAINTY ASSOCIATED WITH MECHANICAL REFRACTOMETERS The IceCap SPT03 Digital Pocket Tester is a portable, rugged, water resistant device...

Flow Sensor – 1″  (FS-100) Usually used with a return pump, this flow sensor can be placed in line with...

High sensitivity seawater phosphate test kit highly sensitive reagents professionally calibrated colour chart differentiated colour gradations precise sliding comparator sample...

High sensitivity seawater magnesium test kit easy conversion factor accurately to 15mg/l precise dosing tip precise colour change separate indicator...

D-D True Seawater Refractometer   Hand held instrument for the measurement of the TRUE Salinity and Specific Gravity (S.G.) of...

LIFEGARD® AQUATICS continues to innovate on their breakthrough technology with the development of the industry’s first submersible LED Digital Thermometer....

Salifert Potassium Reef TestPotassium concentration in natural seawater is approximately 400 ppm. Many aquarists have reported that a low potassium...

TRACE-COLORS PRO MULTI TEST KIT Advanced tests for the high accuracy measurement of Iodine, Potassium and Iron. Recommended for Ultra...

Red Sea Magnesium Pro - Reagent Refill Kit

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