How about putting a wall-mounted fish tank behind the sofa and hanging it on the background wall of the sofa?

Don't put the fish tank behind the sofa: from the perspective of geomantic omen, it is not appropriate to rely on water as a backing, because water is impermanent and it is difficult to rely on water as a backing. Therefore, if you put the fish tank behind the sofa and the family sits there every day, it will be unreliable and affect the stability of the house. And if you put the fish tank next to the sofa, it won't interfere with residential feng shui.

Don't commit "no roof water" or "shower water", that is, the water level of the fish tank is higher than the normal height (190cm or more), which will turn away the family fortune and be suppressed.