So... I used to grow and frag corals and breed clowns. My salt system was around 2000g total volume. Couple of things. Palytoxin is a thing but it's very hard to actually "infect" yourself. One of the supposed worst is the grandis, these were a bread and butter coral for me. They grew like weeds for me. I'd scrape them off the rocks with a razor blade and super glue them to frag plugs or small rocks, I never got sick or anything weird. Keep your fingers out of your mucus membranes, eyes and don't cut yourself while handling them. Wash your hands. I also grew other high end zoa's like candy apple reds, raptors rainbow, purple people eaters, mauls, rastas, if it was a cool zoa I wanted it.
I believe skimmers are essential. Corals like to kill other corals. Some do it by growing over other corals "encrusting" or by being able to grow larger and block out the light. Some use sweeper tentacles that burn other corals. All corals use allelopathy or chemical warfare to some degree softies are the worst for this, only real way to stop or remove this is waterchanges and/or skimming. Not to mention this is one of the absolutely best ways to help your filtration out.
Clowns are the devil.
Once the one of your pair goes female and they start to breed the other fish in the tank will be harassed endlessly. Even if they don't breed and the one goes female her aggression level increases, I can't remember how many times one of the females would chase me out of the 29g tanks I had for my 4 breeding pairs. They can and will draw blood from you( most likely from scraping your hand on the steel rack above the tank from your poorly designed breeder rack.....lol in your haste to get away from the vicious little beast).
Hope my info helps a bit. I haven't kept salt water in over 10 years I'm sure some stuff has changed, I doubt clowns have though.