Durable acrylic bottle caddy holds ten 37mm diameter bottles and includes four 25.5mm diameter reducers for smaller bottles.   The...

NEW OPEN BOX RETURN  - Brand New return. SAVE 20%   Advanced Interface Module (AIM) Universally Compatible with Most Controllers...

The HI740271 is a replacement filter holder with Luer lock (1 pc.) for use with the HI781 Low Range Marine...

HI740228 is a filter disc; part of accessory kit for preparation of samples to be analyzed (nutrients for agriculture) with...

The Marine Nitrate Low Range Checker Calibration Check Set - HI781-11 provides a simple solution to validating the Marine Nitrate...

Please note: Cable will vary from photo, stock photo shown. Hydros Maxspect Gyre 130/230 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                           ...

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...

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

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

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

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...

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...

Save 50% Extension cable for control line of light bar or powerbar Length: 5 m

Lunar LED String – 3 LEDs Use this string of LED in combination with your Lunar Simulation Module When you...

Lunar Simulator Module :: LSM Want to more accurately simulate the natural environment for your tank inhabitants? Moonlight in the...

Algae Management Program Controlled reduction of nitrates and phosphates, prevents nuisance algae  & enhances coral coloration   Algae Management Program...

Phosphate Pro Test Kit Exceptionally high accuracy colorimetric comparator tests  for Phosphate measurement PO4   Red Sea’s Phosphate Pro Test...

Nitrate Pro Test Kit Exceptionally high accuracy colorimetric comparator tests for Nitrate measurement NO3   Red Sea’s Nitrate Pro Test...

The PM3 probe module, includes support for dissolved oxygen, temperature, and 6 digital inputs. The PM3 features are: Monitor/Control Dissolved...

Have a few left- SAVE 20% The 10' Aqua Illuminations interface cable allows the VDM to be connected to the...

Smart 3-in-1 portable meter. 1 probe for pH, conductivity and TDS Automatic Temperature Compensation Faster Processor with The New Chipset...

Probe is fully submersible in fresh or saltwater down to 1 meter. Faster Processor with The New Chipset and Motherboard...

To minimize clogging and ensure fast response time, always keep the glass bulb and the junction of your pH electrode...