Apex Probes

HI70004P/H17007P/HI0010P are premium quality pH 4.01/7.01/10.01 calibration buffer solutions. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring...

Another American Marine first. ORP/REDOX calibration fluid. With a precise measurement of 400mV this calibration fluid is included with every PINPOINT® ORP Monitor and PINPOINT® ORP Controller...

Replace your Temperature Probe, add one for another tank, or put one on your PM2/PM3 module for temperature compensated readings. Buy this probe if you are: Replacing an old probe. Adding...

The Magnetic Optical Sensor replaces our optical sensor with magnet and offers an improved look, feel, and magnetic design that also lends itself to help prevent water incursion into the sensor...

Neptune Systems Magnetic Probe Rack Features – MPR: Organizes up to four probes. Designed specifically for the Apex Controller probes, a perfect fit for the thicker temp probes. Built with an...

PINPOINT® High-Precision pH Calibration Fluids come in plastic envelope packets and are extremely accurate and field portable. Each packet contains ample fluid for calibration (about 30 ml). There is...

Start measuring salinity in your tank and get alerts when out of range. Buy this probe if you are: Replacing an old probe. Adding salinity monitoring to your system via a PM2.

Double junction probes place a second vessel inside the main electrolyte with a second internal junction. The means that even when the aquarium water eventually begins to make its way in the first...

Be alerted of water spillage and take corrective action before disaster strikes Optical sensor technology More reliable than analog counterparts Epoxy-coated and corrosion-resistant Can be...

Probably the most popular sized level sensor this is the ideal sensor for your average containers used in and around aquarium.  This will be the ideal sensor for measuring the return pump section of...

Double junction probes place a second vessel inside the main electrolyte with a second internal junction. The means that even when the aquarium water eventually begins to make its way in the first...

This kit was created to be used in conjunction with Neptune Systems salinity/conductivity probe.  It allows the probe to stay clean and fixes a well know issue with the salinity probe.  Microbubbles...

This kit was created to be used in conjunction with Neptune Systems salinity/conductivity probe.  It allows the probe to stay clean and fixes a well know issue with the salinity probe.  Microbubbles...

The 23″ sensor is a bit larger version of the 15″ sensor and can be utilized in similar applications to the 15″ but for larger sized-aquariums.   A great application to consider is utilizing these...

The 4″ LLS is the smallest of the four sensor offerings.  It is the perfect fit for small reservoirs for small sumps, ATO reservoirs and additive containers.  This can be a great solution to double...

The largest of the LLS sensors is the 35″ sensor.  This sensor is to be used for large reservoirs that are often utilized for saltwater reservoirs for manual and automatic water changes.   Never...