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

110V electronic solenoid valve for CO2 regulator.   Features: LED on/off light indicator Power cord Specs: Trade Size Threads per...

Lunar LED String – 5 LEDs Use this string of LED in combination with your Lunar Simulation Module When you...

Iodine Pro Test Kit High accuracy measuring of total iodine level in your reef aquarium I2   Red Sea’s Iodine...

Red Sea Phosphate Pro - Reagent Refill Kit

6' AquaBus Cable (M/M)

15' Male/Female AquaBus cable. Extension Aquabus cable used to lengthen AquaBus cables so that modules which are more than 15'...

Milwaukee's economical testers are easy-to-use and low cost instruments to measure quick and reliable pH values. Range 0.0 - 14.0...

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

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

SeaTest Mg - Saltwater Magnesium is the third most important element in the composition of seawater. It is essential to...

SeaTest PO4 - Freshwater and Saltwater Phosphate is an end product from the degradation of organic substances such as uneaten...

SeaTest NO3 - Freshwater and Saltwater Uneaten food, fish waste and other organic nitrogen containing compounds are broken down by...

SeaTest pH - Freshwater and Saltwater The pH value is one of the key values of an aquarium or pond....

Say Goodbye to Manually Testing for Calcium, Alkalinity, or Magnesium in your Reef!   The Trident is an automated testing...

NEW EXPIRES 12/2025  - SAVE 80%   Nitrate Pro Test Kit Exceptionally high accuracy colorimetric comparator tests for Nitrate measurement...

M-Rack: One Magnet, Endless Possibilities M-Rack is a versatile magnetic mounting system for your aquarium. It brings a stylish, practical...

Easy to Read Dymax RF-20 Sea Water Refractometer Salinity refers to the amount of salt concentration in water. Different salt...

The API KH TEST KIT tests fresh or saltwater aquariums for carbonate hardness (KH), and helps monitor water quality and...

Start your aquarium with the proper control system!   Fully automate your aquarium with the A3 Apex Controller System, and...

Standard Stand Legs for "Tabletop Mounting" of the CoralVue Aquarium Controller Boards (sold separately). The legs provide a simple yet...

Reef Kinetics Reefbot 60 ml vial - Single unit

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

AutoAqua's Smart Skimmer Security prevents protein simmer from overflowing. Magnetically coupled optical sensor mounts up to smooth surfaces 1/2 inch...

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

Reef Octopus Octo Pulse 2 Flow Pump With WaveEngine LE Controller Max Flow: 1,600gph | 5-10watts | 20 - 80+...

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

HYDROS Pump Controller - Simplify the way we manage flow in our aquariums The WaveEngine LE allows you to easily...

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

Red Sea MCP Calcium Test - 75 tests User-friendly titration test provides a quick and reliable measurement of calcium in...

Red Sea MCP NO2/NO3 Test - 60/100 tests Provides 50 Nitrate plus 50 Nitrite advanced colorimetric tests for marine aquariums...

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

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...

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

Includes the Seneye Dri box and SWS Wifi Units Are your corals not as vibrant as you expect? Have you...

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

High sensitivity seawater carbonate hardness test kit easy usable drop test stable titration reagent precise colour change separate indicator and...

Lunar LED String – 4 LEDs Use this string of LEDs in combination with your Lunar Simulation Module When you...

Leak Detection Probe for use under carpet  (LD-1) Plug this probe into your FMM and then place it underneath your...

TRACE-COLORS PRO MULTI TEST KIT Advanced tests for the high accuracy measurement of Iodine, Potassium and Iron. Recommended for Ultra...

Magnesium Pro Test Kit Advanced titration magnesium test kit Mg     Red Sea’s Magnesium Pro Test Kit is an...

Alkalinity Pro Test Kit Advanced alkalinity titration test KH       Red Sea’s KH/Alkalinity Pro Test Kit is an...

PINPOINT® Temperature Controller is an inexpensive but rugged controller that can be used for a chiller or a heater; or...

PINPOINT Salinity Monitor will accurately and immediately measure the amount of salt in any marine or freshwater system. The reading...

PINPOINT pH Controller" is an inexpensive yet rugged controller, which includes the appropriate probe and calibration fluids. This device will...