Octopus Ground Probe Highly recommended for all aquariums to prevent stray voltage from affecting marine animals.

The ATI ICP-OES Pro kit is identical to the original ATI ICP-OES test.   The ATI ICP-OES Pro Lab Water Analysis is...

The ATI ICP-OES Pro kit is identical to the original ATI ICP-OES test.   The ATI ICP-OES Pro Lab Water Analysis is...

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

Understanding Lighting with the PARwise PRO The PARwise PRO is an advanced light meter that revolutionizes aquarium lighting management. Its...

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...

Reef Octopus Octo Pulse 4 Flow Pump With WaveEngine LE Controller Max Flow: 4,500gph | 11~32watts | 80 - 500+...

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

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

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

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

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

The little new product we promised. It may be little, but it has been in demand for a long time....

Pinpoint ORP Redox 400 Calibration Fluid - 3 total packets

Leak Detection Probe for solid surfaces  (LD-2) Plug this probe into your FMM and then place it on any surface...

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

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

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

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 only salt water Alkalinity Tester at this price! Easier to use and more accurate than chemical test kits Colorimetric...

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

This HYDROS Force Port Adapter Cable (72 inches long) is designed to directly connect the Kraken to power popular 24V...

The Kraken introduces a new concept in aquarium controllers and provides high-power 24V DC switched outputs and a large heavy-duty...

Mount Controllers and Hide Cords Like a Pro (Controllers sold separately) The CoralVue Aquarium Mini Controller Board is a wall-mountable...

Upgrade kit will not include magnet mount.  It is meant to be installed where the ato float switch is installed...

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

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

ACCESSORY POWER SUPPLY 110V power supply for our DC24 accessories like the PMUP and Solenoid Valve.  You can use these...

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

Have the Apex take control of your variable speed pumps and do things you never could imagine with a stock...

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

Stop struggling to get accurate results for your saltwater aquarium with our simple handheld colorimeter. Our nitrite colorimeter fills the...

Easily calibrate your Red Sea ReefSense salinity probe with this Salinity Calibration Pack.   What's Included? (5x) 20ml Sachets of...

SeaTest KH -  Saltwater Bicarbonates (KH) buffer the water against pH changes. But via biological processes in the water the...

RedSea ReefSense – Magnetic 4-probe holder Holds up to 4 probes, suitable for 12mm ½” glass.

Introducing ReefControl: Stay on top of your aquarium Monitor up to 7 ReefSense digital Probes & Sensors and control any...

TECOnnect WIFI MODULE      Compatible with ALL TK-500, TK-1000, TK-2000 The TECOnnect wifi module is an easy to install...

Hydrps Diaphragm Water Pump The HYDROS Diaphragm Pump is a small 12V Drive Port accessory that uses positive external displacement...

Hanna Marine 981520 Monitor  Marine Monitor pH, Marine Salinity and Temperature Testing and monitoring salinity in saltwater aquariums is an...