No3 monitors

[michika]

I use the American Marine Pin Point monitor, and even though their product isn't advertised for continuous use, an email response from them said otherwise. I was told that you can run it continuously, but they recommend weekly calibration, and it can reduce the overall livespan of the probe.

I run mine both ways, I use it weekly to test, and when I do water changes I leave it in continuously for about 4 or 5 hours, just to watch the numbers.