Wow sucks to hear about the tang. Start fresh and do not use tap please!
I heard when setting up a tank the first time it is fine to use tap for the cycling process. For a month I will be doing water changes and finally should have a nice balanced system.
YOU ARE SCARRING ME LIKE HELL! I have the same power head.....I am afraid to get fish now!
Good luck!
P.S. GET MORE LR!!! LOL