Looks like
@gig 'em provided a great assessment. A few additional comments:
I want to be very clear that Cipro is not a cure-all. It's great when used to treat a newly imported anemone that has a bacterial infection, but I don't think this is the case, especially since you've had it for almost a month and it hasn't exhibited the typically deflate-inflate cycle of a sick anemone.
Even if you were to treat your mag successfully outside of the DT, assuming you add it back to the DT after a week, or even two weeks, it may go back to looking and behaving as it currently does, primarily because I think it's not happy due to the fact that your tank is not stabilized (I'm not going to belabor the point). Do you have any coralline growing in your tank? For me it's one of the indicators that a tank
could be ready for an anemone.
I've seen magnifica go through a process where their tentacles deflate in patches around the mouth, in a defined pattern where the deflation essentially circles the mouth. This process needs to stop, or the magnifica's health will continue to decline.
I am currently rehabbing a magnifica, and getting it back to a point where it's eating well and growing has taken several months. Here's a photo:
When I first received it, it looked a lot like yours--bleached with intermittent deflation. I treated it with Cipro, and kept it in a QT tank for a few weeks. It's now in a DT and eats well, but still hasn't gotten bigger.
I'm in the Bay Area. I'll PM you a few additional options.