sensor

CoralVue hydros point leak sensor. New in box, never used never powered on. Price: $35 + shipping

Reef Factory pH meter - $150 Everything is used and in good working condition Located in Hyde Park, NY 12538. Will ship.

Woke up at 4am to beeping. Immediately checked phone. Which is nice to not have to get out of bed if its something stupid. NOPE. Sensor says unknown. And ATO pump went into fallback which I never configured or realized I should have. Thankfully it did not dump a lot of RODI in. Salinity only...

Since Atlas Instruments EC sensors are expensive as hell, I looked around a bit and stumbled upon this DIY build. It basically measures the voltage across a voltage divider, with the resistor under test being a DIY probe: As far as I understand: The circuit uses AC excitation (IC1A on the...

Brand new Apex 2” flow sensor Open but never used also include the are 2” to 3/4 bushings schedule 80 all shipped for $85

Hi all, there were dozens of designs for the old style PMUP sensor mounts, but nothing much for the new version - so I made one! I've been surprised by how popular they been! The collar provides a perfect fit to the pump body, holding a Neptune Apex optical sensor firm and secure - with cable...

Fluid monitoring kit with Leak detector. (2x 1/2" sensors and a 1" sensor) SOLD VDM SOLD Neptune Apex ("2016 wifi") Includes Brain, EB832, ORP probe, and 1link cable (waterproof connector attached) SOLD Pm1 module SOLD BreakoutBox SOLD

With all these alkalinity monitors and related equipment that are already on the scene, I was wondering if there was any work being done on an actual sensor that did not require titration. I know Seneye has something coming out, but that appears to calculate the carbonate level using CO2...

Is it possible to use this water level sensor with the FMM? It uses the same voltage and current as the apex optical sensors and the nice thing about it is this would never touch the water. It works by using the capacitance changes in the liquid container. These sensors can be found online for...