Hi, I am actually beginner, my first reef is only about 100 liters, about two years old.
And my next reeftank (470 liters) is in my workplace. I am a small 3D printers seller so in my new tank there is a 3D printed shipwreck and a rock covering the overflow. I hope that corals and fish will be healthy and grow.
Bro that is one of the coolest saltwater tanks I've seen. I love coral and colorful reefs like everyone else, but that is unique and beautiful in a totally different way!