What to do, what to do?

[marie]

Here's my dilemma, as some of you know Doofus has ich and the plan is to treat him (and the rest of the fish) before being transfered into his new quarters.
I can treat with cupramine in a hagen 48g (4ft long), that's risky because he won't be happy in such a small tank.
I can empty the 175g of all rock, sand and corals leaving the fish in there and treat with hyposalinity but I risk a big ammonia spike with the die off of whatever inverts get missed in the tank cleanout and doing large (over 50%) water changes would be hard because I can only make up 60g of new water at a time
Any other options out there that anyone can think of?