Hello, I am looking for probes for determining the amount of ammonia, nitrite, and nitrate present in a liquid. Specifically, I'm looking for something I can use to monitor (not adjust, just monitor) the chemical status of my fish tank. Googleing hasn't found me anything but the MQ-137 which is a g…

Ammonia, Nitrite and Nitrate Probes?

GoForSmoke February 25, 2013, 10:51pm 6

malfist, have you ever checked out aquaponics?

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