Okay, so as you guessed it I installed an Apex on the system yesterday. I've actually had it for nearly 3 years, but it was supposed to go on a different tank. Well, it never did so I finally put it to use. pH monitoring is actually the main reason I hooked it up, but the pH probe dried out completely and won't calibrate even after soaking... I guess that happens after 3 years. A new one from BRS is on the way. The other probes are working still! I have the probes placed near a baffle, so it gets plenty of water flow to help get those more stable readings.
Bonus video of copepods on the glass.
Bonus video of copepods on the glass.