Who called you stupid? It was a question, not everybody knows how big they get, nor am I psychic enough to know you got it from a 60 litre.
With lack of space fish get stunted. They should be kept in tanks suitable for its potential adult size.
Ruby sharks, aka rainbow sharks, need 55 gallon tanks and lots of space. They can become very territorial as well.
Two angels may fight as they mature if they're not a pair, and also need space. And taller tanks.
Add to this your common plec...
110l isn't big enough for all these fish. That's a fact, not me calling you stupid.
So to answer your original post with this new info in mind: You're overstocked, so just stir your sand yourself if you're worried it will get compacted. The plec should keep it worked over though.