You're welcome. Boring as it may sound in repeated hobby discussions, significantly sized stone and wood "hardscape" is the basis of aquascaping that meets the eye and immediately reinforces the impression that one is seeing a natural underwater scene. This in turn subconciously allows live plantings to both shield and reveal the fish and other animal occupants as the living things to be focused on. Thus, focus on the fish is enhanced rather than distracted.
Being careful about tank additions that can raise mineral content (whether things directly from the sea such as coral or shells, or indirectly from the sea, for example limestone or other sedimentary minerals created by coral and shells crushed by eons of movement of the earth's crust) is all a part of protecting the tank's chemistry from moving too far away from one's tap water chemistry.
~~waterdrop~~