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

HI 758 Calcium Checker HC is supplied with 2 sample cuvettes and caps, reagents for 25 tests, (1)1.5V AAA battery,...

HYDROS 9ft Sense Extension Cable   This 9ft long extension cable for HYDROS Sense Accessories for Control 2 and Control...

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

Pinpoint ORP Redox 400 Calibration Fluid - 1 packet

The HI780-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Marine...

Sybon Heavy Duty Model is one of the most robust models available. You can feel the difference in weight by...

Concentrated Reagent Specifically for Alkalinity Testing Machines A concentrated reagent for the HYDROS iV Tester, Focustronic's Alkatronic, and Kamoer KH...

An Apex monitored aquarium is a successful aquarium! Introducing the exciting all-new A3 Series of Apex controllers. From the Jr....

Six Pack of ICP Total Water Tests The Fauna Marin Reef ICP Total Test gives a quick, accurate, and easy...

1 Full Box of 25 Single Packs   HI70024P is a premium quality 35.00 ppt salinity calibration solution that is...

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

COPPER PROFI-TEST Copper can be present in tap water and in salt mixes. If the copper concentration is higher than...

Red Sea Calcium Pro - Reagent Refill Kit

Hanna Marine Nitrate HR certified standard kit

HYDROS Minnow, Aquarium Monitoring with Twin Micro Dosing Pumps The HYDROS Minnow features two independent micro-liquid dosing pumps for precise...

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

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

Red Sea’s Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 25oC/77 0F....

HYDROS Leak Sensor - Sense Port Accessory The HYDROS Leak Detection Sensor is a solid surface leak detector that can...

AutoAqua Smart Stir A magnetic stirrer for mixing water test reagents efficiently and effortlessly. LABOR AND TIME SAVING Water testing...

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

Half U Clips for Rope Leak (10pack)

Power Supply – 24VDC 36W (PS-36-US) This 24VDC, 36W power supply is used with the FMM so that you can...

Hanna Instruments Marine Coral Care Kit Easy-to-read, instant digital results Compact and portable Simple one-button designs and straightforward steps  ...

The HI731331 are the replacement glass cuvettes used with the HI96 series portable photometers and turbidity meters. Each cuvette has...

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

CoralVue HYDROS DC Solenoid Valve The HYDROS DC Solenoid Valve is a handy HYDROS Control 2 and Control 4 accessory...

The HI781 Marine Nitrate Low Range Colorimeter is designed to accurately determine low range nitrate levels in saltwater aquariums and...

The HI780 Checker HC (Handheld Colorimeter) is a simple, accurate and cost effective way to measure pH in saltwater.  ...

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

Solenoid Valve (SV-1) This 24VDC powered, normally-closed (NC), solenoid valve has push-fit tubing input and outputs designed for standard 1/4″...

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

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

Controller Designed for Continuous-Duty Liquid Dosing Applications The HYDROS Sole is an aquarium controller hybrid with a heavy-duty liquid dosing...

An Apex monitored aquarium is a successful aquarium! Introducing the exciting all-new A3 Series of Apex controllers. From the Jr....

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

The PINPOINT pH Monitor" is in use by thousands of customers worldwide. This affordable unit remains the only full-time pH...

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

High sensitivity seawater calcium test kit easy conversion factor accurately to 5mg/l precise dosing tip precise colour change separate indicator...

Red Sea Nitrate Pro - Reagent Refill Kit

Protective Case for Milwaukee Refractometers

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

HYDROS Sense Port Accessory   Monitor your RO/DI units' water quality with HYDROS Dual Inline TDS Sensor. Plugs directly into...