Yellow tang, yellow eyed kole tang. Those are pretty safe. I have a regal hippo in a 72g for 3 years now with no issues. Stay away with the name 'powder' don't know to many with long term success.
Depends if your planning on keeping it or getting rid of it.
Keeping it.... leave it alone.
Selling it, put it in a dish for a week to heal up. Best to heal in your tank but not leering it's foot plant on your rock work.
Welcome aboard nelma.
I would stay away from the sea clones as they are a disaster. If you're looking for a cheaper skimmer, try looking at eshoops hang on the back. I like the reef octopus myself but a little pricey if bought new. There are many sites that folks are getting out of the hobby...
Nothing happens. Every other forms offers something more than an opinion. They have doctors, professors, and even prizes. Alot of folks packed up too. Best of luck.
Installing it on return side could cause some problems. You need head pressure to push threw the reactor and I would think you would back up the 110. All equipment should be installed pump side.