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

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

CarbonDoser Electronic CO2 Regulator V2.0 (complete system: with remote box option)   Now sold with the TUNZE (German Built) Regulator...

Easier to use and more accurate than chemical test kits Adaptation of Standard Method Ascorbic Acid Accuracy 10 ppb 5%...

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

1 Single Pack of Fluid   HI70024P is a premium quality 35.00 ppt salinity calibration solution that is NIST traceable...

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

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

Pinpoint ORP Redox 400 Calibration Fluid - 1 packet

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

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

IceCap 4K Gyre Flow Pump with WaveEngine LE Controller The IceCap 4K Gyre Flow Pump is not only more powerful...

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

The Magnetic Optical Sensor replaces our optical sensor with magnet and offers an improved look, feel, and magnetic design that...

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

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

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

Protective Case for Milwaukee Refractometers

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...

Half U Clips for Rope Leak (10pack)

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...

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

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

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

Hanna Marine Nitrate HR certified standard kit

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

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

PINPOINT" Salinity Calibration Fluid 53.0 mS standardized fluid for calibrating the PINPOINT Salinity Monitor"

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

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

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

Red Sea Alkalinity Pro - Reagent Refill Kit

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

IceCap 2K Gyre Flow Pump with HYDROS WaveEngine LE Dual Pump Controller The IceCap Gyre is back and better than...

Dalua Illumagic Pixel & Vitamini 24-Hour Auto Scheduler Dimmer The Dalua Illumagic Pixel & Vitamini 24-Hour Auto Scheduler Dimmer provides...

Red Sea MCP Marine Care Test Kit Easy-to-use tests for the accurate monitoring of all of the important parameters during...

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

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

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

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

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