[Delphinus]

And, just so that I can feel better about mentioning this part ... as far as nitrate reactors go, the Pinpoint nitrate monitor does not work in the same sense that a pH monitor or a Ca monitor or ORP monitor does, in that you can have the probe continuously exposed to the water and have it give you periodic automated readings. You can't do this with the nitrate monitor. You have to calibrate it every time and you have to have the probe in the the supplied test vial. So it's essentially a replacement of a chemical based test in that you're physically doing something with a sample of water. In other words, there's no way you'd ever automate the operation of a nitrate reactor with a nitrate monitor. I know you probably know this already but I thought it bore mentioning just in case anyone else was thinking about that (I wasn't sure myself when I was looking into these things a year ago).