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  The new SQ-420x smart quantum sensor can be connected directly to a computer for taking spot measurements or graphing and datalogging real-time P...

  Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found i...

Aqua UV Quartz Sleeve with Rubber Seal (Classic 40 Watt)

Multi Light RMS - GUIDE The multi-light RMS offers a customizable multi light mount solution for Radion XR30 and Radion XR15 lights. The multi-ligh...

The super popular Tunze 9004 in now available with a DC pump and controller! Recommended, depending on tank load, from 60 to 300...

CaribSea Aragonite Products Nobody puts as much effort into bringing you the quality and selection of aragonite products as CaribSea does. All of o...

Neptune Apex Controller Base Unit / "The Brain" now available separately!       Monitors your equipment – ensuring it is operating correctly at all...

Aqua UV Replacement Lamp for UV Sterilizer (Classic 15 Watt)

PE® Flakes – Premium Saltwater Fish FoodElevate your saltwater aquarium game with PE® Flakes, the first fish food flakes specifically designed for...

Fauna Marin ELEMENTALS K concentrated potassium mix for marine aquaria - 1000ml Essential concentrated potasium mix supplement for marine aquaria ...

START MONITORING FLOW IN YOUR AQUARIUM!   THIS KIT INCLUDES:   FMM - FLUID MONITORING MODULE 1'' FLOW SENSOR (FS-100) TWO 1/2'' FLOW SENSORS (FS-50...

Think smart float switch. The optical sensor indicates the presence of water above or below the sensor location.The Magnetic Optical Sensor feature...

Usually used with aquarium accessories like RODI inputs, calcium reactor feed lines etc., this flow sensor can be placed in line with the flow on 1...

Great for mounting multiple lights on one rail across your tank   Requires a mounting rail to fit your tank, and brackets for each ...

Tunze Care Blades set 86mm (3 1/3")

BALLING LIGHT TRACE 1-3 Micro- and Trace elements serve as a balancing solution for the Balling Light and Classic Method.   The addition...

Flipper repair kit for Max Flippers   Includes: 2 handle felt replacement pads and 1 internal scrubber pad with adhesive backing  Make your Flipper...