I would get a QT tank, some IO (from experience) and make a new batch of .022 water. Airate heavy for at least 5 hours, temp match ONLY and move the really bad corals to the QT tank. Make sure the tank is by the window where sun will shine on it but not close enough it affects the water temp. get a small flow powerhead, nothing big. Even just a hang on filter to move water is enough. They will not get blown around so much and be more apt to open up, getting sun! My torch and frogs pump up like crazy with no flow and with some to juuuuuuuuust barley move the tentacles around, if being pumped up is good, I swear they are in such ecstasy they need cigarettes. If they get anywhere near vertical, they get what looks ****ed and thinnish. Now, they do stay open and alive in higher flow, but, for our/your instance, where trying to get them healthy, not see what they can take. I will bet if you a thousand dollars if you do this, your corals will perk up, and, if you have direct sun on them for at least 3 hours a day, they will look a LOT better. I have a QT tank I dont take care of too well other than fresh water I dump all my incoming corals in. They may look a little funky at first, but, corals open up in the sun like nobody's business.
Get what you can out of that main tank!
If you want to go an extra step, get a bucket of the same fresh salt water and rinse the corals before putting them in the QT tank just to rinse off the old stuff. As far as the anemone goes, I would just go at it slowly, ****ing it off or whatever and pluck it off its perch. It will absorb the sun whether it like it or not all ****ed off, but, at least it is getting sun and on its way to healthy land.
I have a torch, two types of frogs, a clam on the sand, xenia, xfilia(sp), dendros, toadstool in the 90 DT... """duncans, mushrooms, GSP, candy canes (in fresh QT saltwater)"". I do not dose and water changes are not in my vocabulary and they are all doing great. Not growing very fast, lol, but plump and healthy.