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

Hanna 10 mL syringe with Luer lock

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                           ...

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

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...

IceCap 4-Probe Magnetic Holder   Holds 4-Probes Magnetically mounts to most surfaces up to 1/2in thick!   A SIMPLE WAY...

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...

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

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

Neptune Systems LDK - Leak Detection Kit Detects leaks on contact Instantly alerts you via your mobile device Monitor for...

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...

Neptune Systems Aquabus Cable - 30' M/M AQUABUS CABLES WHAT ARE THEY? Aquabus is the communication link between your Apex...

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

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

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

FLOW SENSORS FMM - FLUID MONITORING MODULE The FMM (Fluid Monitoring Module) is a module that connects to any Apex...

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

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

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...

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

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

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

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

This is the perfect fluid for the storage of any pH or ORP/REDOX Electrode. American Marine Probe Storage Fluid will...

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

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...

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

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

Two Little Fishies AccuraSea Seawater Reference Do you think it’s important to maintain salinity precisely? We’re with you. That’s why...

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...

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...

Red Sea Calcium Pro - Reagent Refill Kit

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