Nice tank, I love your little Stiphodons, I rarely ever see mine.
The aqueon pro heaters are pretty solid, lots of great features and so far mine has been really reliable and holds a consistent temperature.
Great tank. I too will be setting up a fluval chi along with my 11.4g Mr aqua.
I love those little goby looking.things...they are awesome. Do they have a common name?
They're Stiphodon gobies