The aquarium is an extension of the painting so the painting does not have a frame.
You can also see my 2 20 gallon tanks in my hallway, they are also freshwater.
I use a UV sterilizer in this aquarium, you can see it all the way in the right back of my tank. I really recommend one for bigger tanks It keeps the water crystal clear, kills parasites and algae, adds flow to tank.
To the top left I have an mag float algae scrubber which I recommend highly as well it changed my life.