Was given a fluvial evo 13.5. Excited to start my first saltwater tank. I'm hoping to keep corals, a pair of clownfish, and a watchman goby and pistol shrimp. Apologies for the bad picture, but looking for some opinions on aquascaping. I have several pieces of rock I got as leftovers from a colleagues aquascape that are all relatively chunky and don't stack all that naturally. Is this too much rock? Should I ditch the arch? I want to have plenty of spots to attach coral but don't want the tank to be too rocky.