I am going to have to get myself one of these as I love the size. I really love what you did with the hardscape and plant choice.
I do have a word of warning though. It looks like you have a Tetra brand heater. I have had 2 fail on me, one taking the water up to almost 95 degrees. A few other members have had the same experience as me. I bought them because of the compact size but they seem like they are not reliable, and when they stick on, they really hot. Not trying to give advice, just sharing my own experience which seems to have happened to more than a few other members.