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

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

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

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

Neptune Apex Display Module

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

The Simplicity 3-in-1 New Tank Rapid Test is an easy-to-use test strip designed for the cycling process of both fresh...

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

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...

Red Sea Nitrate Pro - Reagent Refill Kit

Red Sea Magnesium Pro - Reagent Refill Kit

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

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

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...

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...

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

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

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

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

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

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

Hanna Instruments Marine Algae & Nutrient Management Kit Easy-to-read, instant digital results Compact and portable Simple one-button designs and straightforward...

Aquarium Heater Controller The IceCap heater controller can connect up to two heating elements (sold separately) and provides precise temperature...

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

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

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

Reef Foundation Pro Test kit include individual test kits and the Reef Foundation Pro kit, which combines the 3 individual...

Our Marine Ammonia Checker HC (HI784) is designed to accurately and quickly determine the ammonia level in marine (saltwater) samples....

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

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

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

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 - 3 total packets

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

Probe holder can fit up to four probes. Its design to hold ph, ORP, salinity and/or temp probe. It has...

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

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

Please note: CONTROL 2 ONLY - Nothing else is included.   Monitor & Control Like a Pro, Even if You're...

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

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

Professional pH monitor especially designed for use with aquariums. User selectable Hi/Low Set Point Manual 2 points calibration Visual LED...

The Simplicity 8-in-1 Freshwater Rapid Test delivers fast, precise testing for freshwater aquariums in a convenient test-strip format. Designed for...

CONTROLLER ONLY. Requires a mobile device and power supply (not included) and a Salinity Probe Kit for conductivity monitoring (also...

Calcium is one of the most important elements in a reef aquarium. Reef invertebrates, such as corals, crustaceans, mollusks, and...

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

PARwise is a unique light meter with the ability to measure spectrum. It can be used underwater and in air....