This is a 4 ft 75 gal gonna b a lot of little fish and mixed reef , Goni, euphilia, Zoas, and maybe some meaty corals in the sand? My main structure is like a hotel so many rooms that are all nice size cubbies that have secret passages and ventilation for flow so detritus can be blasted when needed and it’s like a 3 piece stacker incase of stubborn algae and fish