That set up looks fantastic Nidge
How many Silver Sharks are in there? What size are they? & are they at all skittish?
When I first started out I had a bad experience with a Silver Shark, I bought just one (7inch+) along with other smaller fish & he just flew from left to right nearly allday long. He ended up being totally stressed so I gave him to a LFS to move on for me before something serious happened to him.
To be honest I'd heard you shouldn't keep just one Silver Shark on its own - but you know what its like when you first start out!!
Would love to try again with 3 or 4 sometime. Any Silver Shark advice greatly appreciated?