Another decision - I was leaning toward not bothering to incorporate my Apex controller on this tank but - as I've got a lot to learn about freshwater parameters and want to create an environment conducive for shrimp - I've decided to bite the bullet and add the Apex. I'll need to order a long Aquabus cable (basically just a long male/male USB cable) another EB8 and an PM1. That will provide 8 controllable circuits, temp and pH monitoring. It will also provide the piece of mind of having a fail-safe for the heater.
Now I just have to figure out how to hide the probes. I can probably bury the temp probe, but the pH probe will probably be seen At least it's a pretty shade of blue