conductivity probe

I know this is nerdy… I want to use a conductivity probe on my RO system to tell me if the DI resin needs changing (I used two DI pods so the probe will sit between the two. OK Conductivity measurement is a dark art but I don’t need (a) stunning accuracy or (b) 24/7 monitoring. All I need is...

Hi everyone, I am in hobby around 8 years but pretty new to apex neptune systems. So, just got my set including ph, orp, salinity and temp probe. For salinity probe I used @Randy Holmes-Farley condutivity calibration solution by table salt. Which is supposed to be 53 ms/cm S:35. I let the...

I conducted a 20% water change (on a 10 gal Fiji cube) and removed all of my Neptune Apex probes and cleaned/scrubbed them with a dilute citric acid bath. They then remained in RODI water for a couple of days while I did some other work on my tank. Upon putting them back into service the ORP...

I conducted a 50% water change a week ago in my Coral & Invertebrate Quarantine Tank (10 gal Fiji Cube). I have a Neptune Apex in this tank. My salinity prior to the change was 33.75 ppt. I intended to raise it to 34.5 ppt with the change. The water change took approximately 30 minutes and...

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...

Relatively newer reefer enthusiast here :) I was searching for a replacement Neptune Conductivity Probe recently and I actually found one! Apparently, it's mfg date is 2016, however, it's new with still capped solution attached (according to the supplier, Dynamictank.com). The probe is...

We are pleased to officially announce the newest product from Vivid Creative Aquatics - the Salinity Probe Stability Kit, or SPS Kit for short. Roughly half of those currently running a Conductivity probe to monitor salinity are having issues with sporadic readings and unreliable results. The...

I, like many others, have had issues with the conductivity probe from Neptune Apex. When I had the Profilux 4, it's probe nicely matched my two Hanna conductivity probes. After switching to the Neptune realm, I never was able to get included probe to calibrate. I purchased another on the off...