Before he was thrown in jail for ever and ever, R Kelly had a shark tank in his Olympia Fields house that I took care of. I can’t remember the exact volume, but I feel like it was around 7k gallons. It was 20+ ft long with bullet ends, and contained two black-tips.
It was a pretty standard set-up for the time…big skimmers, lot of mechanical and chemical filtration, UV, sand filter, etc.
Overall, the sharks were healthy, but I would describe them as largely unenthused about life. They were about 2’ long when they went in. I stopped working for him after a while, so I have no idea what ended up happening to the sharks once they got big. Knowing how big of a crap-bag he is, he probably had somebody throw them into the Calumet River.