Going to disagree with the copper comment to a point. It definitely doesn't get in the seals, since my current frag tank was a QT tank at one point. Also, eventually, the rock will be safe again. My mother's 90 gallon softy reef was at one point a fish only, and treated with copper several times. The reef is thriving now, with inverts and everything, so copper leeching isn't enough to destroy the tank. She did wait 3 years and run a ton of carbon and chemi-pure in the tank to get it to the point where it was no longer dangerous.
That said, its definitely NOT a good idea to add copper to your system. Even buying a 10 gallon tank, and doing weekly or daily water changes with copper and new salt water would be better than ruining your system. As stated, all inverts (including coral) will die. Sorry about your tough situation man, but as stated, I feel like several people have been trying to encourage you to slow down, and hopefully this will be a lesson learned to take things slow.
They do make (did make) ich treatments like Green-X that have no copper treatment. Burton's also sells an organic one, that claims to be good for treating ich, and I've also heard that garlic can help. I've tried all of them, and had some results with minor ich outbreaks, but once it gets kinda bad, copper is the only method I've used that's been effective.
