What To Do To My Fish Tank Now?

Hey this my juwel rio 400, i have a cichlid that is showing aggression so i need to re arrange a few things and usually i plan any change to my tank and its mapped out with precision but i have no idea what to change at the moment pref not the slate as it ways a tone and i really like the look of it, if anyone has any suggestions i would really appreciate it. o i'm planning on removing my tinfoils so plants will be an option after this sunday.

Looks awsome! I'd say keep it how it is

Or, I'd say move the thermometer to the left / right side of the tank not in the middle, but each to their own oppinion (or maybe you need it there? lol)

You could put a severum in there or 2 in there.