Your original post asked for Horror stories regarding the Apex.
2.5 Weeks ago my system crashed. I used a two float safety system for topoff and both floats stuck at the same time. I pumped Kalk into my system for 7.5 hours straight.
This wasn't an Apex issue, this was my lack of programming. The Apex was emailing me to tell me things were awry but I was sound asleep.
I had turned off the audible alarms, because they always go off when I do tank maintenance.
But the critical error was that I programmed my Topoff for the dual float switches. But did not have it programmed to shut off for Salinity or pH swings.
So please make sure you add a couple of lines in your topoff outlet code to shut down if pH or Salinity go out of range.
Once you have your programming dialed in make sure to export and save your configuration.
And now that you have everything tied into the Apex, it's easy to become very dependent upon it. You can purchase a back up Apex Brain pretty inexpensively from Neptune or your local Neptune dealer. And it is also helpful to have a spare EB8 sitting in a cabinet as well.
With Neptunes great technical support, should an EB8 malfunction they can help you swap the EB8 and get you back up and running in just a few minutes.
Dave B