New to girs Help pleaseTank kill!

I am new to the site and new to salt water. I purchased a 55 gallon tank all set up with water and everything. It has been set up for a little over a month and everything looked great. It came with a Lion and a triger fish. I located a xtra large maroon clown that I wanted to add to the tank but waited until the 1st month was up to make sure everthing was good. I went to purchase it the other day. It was around an hr away so I made a day out of it. When i made it back in the evening I came home to a Horor. I notice all 5 of the turbo snails 2 urchins a couple of hermit crabs, My frog spawn and a few other frags I had were all dead or close to it. I couldnt figure it out at first. I noticed right away that my circulation pump was not working and thought it was maybe not enough water movement and O2 in the tank. I took out the broken pump and put another in right away and did a water change. The fish all look fine. I started to check over the broken pump to see what the deal was. I put it in a bucket of water and plugged it in. Bad idea. I felt a major shock that tripped the breaker in the kitchen plug. The cord had chew marks and bare wires which electicuted my tank. I am devistated! One of my urchins have been hanging out on the pump for the last few days. He must have finaly chewed through it. I didnt know they could do that. Has any one else had this happen?
So now i am looking for any cheap frags around to restock my tank. Also, Where would be a good spot to get a new partial clean up crew for the tank? Do you think the live rock is ok or did it kill everything? The fish are fine and a few hermit crabs seem ok. I had some mushroms that shrunk up a lot but still seem alive. Any help would be great. I live in northeast Iowa but could drive for the right price on things.
Thanks for any help.