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I don't understand this. It isn't anywhere explained on the purchase page you need these other calibration fluids. One pays €1000 and then only in the guides you will discover you need to buy extras...

So how do I program this sensor? I cannot find it anywhere simply explained. I just want to it to notify me when the sensor is outside the water so I know I need to do a water change. I can see 8...

I want to delete sensor data to not fill up the profilux storage too quickly but all I can find in myghl is a way to delete individual measurements. I want to record highly detailed temporal data and...

I calibrated it with the 7 and 9 solutions and put it in the tank that has tap water and the PH is stabilized at 8.09, which appears very high to me. The tanks only have gravel, artificial plants,...

I recently purchased 3 mega profilux 4 systems and am starting to connect everything. In the guide to calibrate the Ph electrode I see that for freshwater I need PH calibration fluids of ph 4.0 and...

Thanks for your reply. But it remains unclear to me if I place the rod with the sensor inside the water or outside the glass, and why does the sensor have to be pointed towards the rod? It is not...

I cannot find any guide on how to install the level sensor. The product also didn't come with any paper to explain what to do.. I have:
-Level-Sensor, optical, Version 2
-PL-LF-S12, angled...