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

Please note: Cable will vary from photo, stock photo shown. Hydros Maxspect Gyre 130/230 WE Pump Adapter Direct Pump Driver...

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...

Please note: Cable will vary from photo, stock photo shown. Hydros Maxspect Gyre 150/250/280 WE Pump Adapter Direct Pump Driver...

Includes:  HIREEF-2: Reef Professional Kit Version 2                           ...

The PMUP is a multi-purpose pump that can be used for many different tasks on your aquarium.  Automatic Top-Off (ATO)...

Seneye Leak Detector   What could be worse for your fish than no water in the tank and a wet...

Seneye Leak Detector   What could be worse for your fish than no water in the tank and a wet...

IceCap 4-Probe Magnetic Holder   Holds 4-Probes Magnetically mounts to most surfaces up to 1/2in thick!   A SIMPLE WAY...

The Reef Brite Bluetooth Controller allows complete control of XHO, LumiLite Pro, and LumiLite units. Easy to install, simple to...

A key ingredient to a great reef aquarium is maintaining proper levels of Alkalinity, Calcium, and Magnesium.   The Trident...

The PINPOINT CO2 Regulator Kit is now available. This is a high end regulator/solenoid engineered specifically for the aquarium hobby...

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

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

Precision device with fine adjustment for standard CO2 cylinders, thread in keeping with German standard DIN 477 (US version with...

The Copper High Range Checker HC Calibration Check Set - HI702-11 provides a simple solution to validating the Copper High...

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

Smart Temp Security Smart Temp Security controls an aquarium heater or chiller within a range of 72℉ to 84℉. A...

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

Neptune Systems LDK - Leak Detection Kit Detects leaks on contact Instantly alerts you via your mobile device Monitor for...

Our seneye device magenetic holder is designed to hold your seneye USB device securely in place using powerful neodymium magets....

The HI98308 Pure Water tester is a rugged and reliable pocket-sized tester that offers quick and accurate readings. The HI98308...

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

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

Copper Test Kit - Freshwater/Saltwater Copper, a common treatment for many parasitic infections, must be monitored in an aquarium or...

The HI98108 pHep+ pH tester provides high accuracy measurements in a rugged pocket-sized design. This meter features an exposed temperature...

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

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

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

Flow Sensor – 1/2″  (FS-50) Usually used with aquarium accessories like reactors, carbon/GFO filters, etc., this flow sensor can be...

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

Flow Sensor – 2″ (FS-200) Usually used with a return pump, this flow sensor can be placed in line with...

FLOW SENSORS FMM - FLUID MONITORING MODULE The FMM (Fluid Monitoring Module) is a module that connects to any Apex...

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...

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

Neptune Apex Display Module

This cable connects to the 24VDC accessory connections on the 1LINK. This cable has two bare (tinned) wires on the...

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

SWS & WiFi The seneye web server with WiFi module removes the need for a pc altogether and allows wireless...

Now you can connect your seneye device to your PC, or power adaptor, up to 5m from your aquarium and...

This seneye USB Power Adapter (US) is a compact power adapter that offers flexibility for those who don’t wish to...

Hardcore Reefer? Now you can monitor your fish and coral while transporting during a move, purchase, etc The car power...

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

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...