Neptune Systems recommends keeping on hand no more Trident reagent than you might expect to consume within the next 12...

Neptune Trident NP Two-Month Reagent Kit - For the NP unit only Two month's reagent supply stores neatly inside the...

PINPOINT pH Replacement Probe, Lab Grade, Double Junction:   10 foot cord, Ag-Ag/Cl reference, extended life, high supression cable jacket. Can...

CoralVue HYDROS 5PIN System Command Bus Cable   This 6ft long HYDROS System Command Bus Cable allows HYDROS devices to...

The TUNZE® Osmolator 3 nano is a simple and safe device with just one sensor for maintaining a constant water...

  WARRANTY CoralVue, Inc. and HYDROS hereby guarantee this product to be free from defects in material and workmanship for...

HYDROS Water Level Sensor - Sense Port Accessory The HYDROS Water Level Sensor is an optical sensor you can use...

The CoralVue HYDROS Auto Top-Off Kit Includes: HYDROS Triple Water Level Sensor (plugs into HYDROS Sense Port), HYDROS DC Micro...

HYDROS Float Switch with Magnetic Mount The HYDROS Magnetic Float Switch Sensor is a simple yet effective water level sensor...

Make offer is for multiple packs.  PINPOINT" High-Precision pH Calibration Fluids 4.000 +/- 0.002 7.000 +/- 0.002 10.000 +/- 0.005...

PINPOINT" High-Precision pH Calibration Fluids 4.000 +/- 0.002 7.000 +/- 0.002 10.000 +/- 0.005 These come in single-use plastic envelope...

Neptune Apex Temperature Probe Keeping a stable and consistent temperature in the aquarium is paramount to the health of your...

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

Please note: Cable will vary from photo, stock photo shown. HYDROS Reef Octopus Varios 2/4 & OctoPulse 2/4 WaveEngine Pump...

CoralVue HYDROS DC Micro Pump With a HYDROS DC Micro Pump and a HYDROS Optical Water Level Sensor (or Float...

Concentrated Reagent Specifically for Alkalinity Testing Machines A concentrated reagent for the HYDROS iV Tester, Focustronic's Alkatronic, and Kamoer KH...

This cable is the 4-pin male to male cable many of you have been waiting for. It is ten feet...

HYDROS Temperature Sensor - Sense Port Accessory The HYDROS Temperature Sensor is an easy and affordable way to prevent your...

HYDROS 9ft Drive Extension Cable   This 9ft long extension cable for HYDROS Drive Accessories for Control 2 and Control...

Optical Level Sensor  (OS-1) V2 This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex...

Please Note: The New EB 832 is not compatible with the classic Apex or Apex Jr systems.   ENERGY BAR...

pH Value @25C 10.01 Size 20 mL sachet HI70010P is a premium quality pH 10.01 calibration buffer produced in accordance...

pH Value @25C 7.01 Size 20 mL sachet HI70007P is a premium quality pH 7.01 calibration buffer produced in accordance...

Please note: Cable will vary from photo, stock photo shown. Hydros Third Party Controller WE Pump Adapter Direct Pump Driver...

This HYDROS Drive Port Cable (72 inches long) is designed to connect to an available Drive port on a Kraken,...

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

CarbonDoser Electronic CO2 Regulator V2.0 (complete system: with remote box option)   Now sold with the TUNZE (German Built) Regulator...

The HYDROS Leak Detection Rope Sensor is the first of its kind in the aquarium industry. The moment water comes...

HYDROS Waterproof IP68 Temperature sensor - Sense Port Accessory The HYDROS Slim Temperature Sensor Probe is only 1.6” long and...

Neptune Systems recommends keeping on hand no more Trident reagent than you might expect to consume within the next 12...

Power Supply – 24VDC 36W (PS-36-US) This 24VDC, 36W power supply is used with the FMM so that you can...

The MA911B/2 probe is lab grade, gel-filled pH probe for use with Milwaukee Monitors and Controllers.   DESIGN FEATURES Top...

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

Smart. Safe. Quiet. The ReefATO+ is designed to maintain a stable salinity and water volume in a reef aquarium by...

HYDROS Control Power Supply Allows you to power the HYDROS Control.     This power adapter is NOT compatible with the...

HYDROS Sense Port Accessory   Monitor your RO/DI units' water quality with HYDROS Dual Inline TDS Sensor. Plugs directly into...

HYDROS Leak Sensor - Sense Port Accessory The HYDROS Leak Detection Sensor is a solid surface leak detector that can...

Concentrated Reagent Specifically for Alkalinity Testing Machines A concentrated reagent for the HYDROS iV Tester, Focustronic's Alkatronic, and Kamoer KH...

Pinpoint ORP Redox 400 Calibration Fluid - 3 total packets

Lab Grade Salinity/Conductivity Probe Kit Keep track of the salinity in your marine aquarium with the CoralVues HYDROS Salinity Kit....

Expand Your Possibilities Mix and Match your Favorite Equipment!   Scheduled Feeding With the Apex, you can easily start a...

The Neptune Systems Probe Calibration Kit includes everything you need to calibrate your pH probe and salinity probe for reef...

HYDROS Skimmer Sensor - Sense Port Accessory The HYDROS Skimmer Sensor serves a very specific and important role: it prevents...

HYDROS 9ft Sense Extension Cable   This 9ft long extension cable for HYDROS Sense Accessories for Control 2 and Control...

A Smart and Affordable Way to Power Your Aquarium Gear The HYDROS Power 4 WiFi Power Strip is a smart...

ICECAP Y CABLE Advanced Controller Y-Cable for Reef Octopus VarioS Controller This 6.5ft cable allows you to independently control two...

Solenoid Valve (SV-1) This 24VDC powered, normally-closed (NC), solenoid valve has push-fit tubing input and outputs designed for standard 1/4″...

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