Originally Posted by saltn00b
inverts do not need QT. i dont know about clams, i would venture to say not.
I would disagree with this, at least for corals. I am in the process of setting up a coral QT tank, and I know many others who have done the same thing. Corals, both wild and aquacultured, can bring all sorts of nasty things into our tanks, and quick dips do not generally get rid of them. I personally have gotten flatworms (various kinds, from the annoying red planaria to more dangerous acro eating fws), acro eating red bugs, hitchhiking coral-eating crabs, and coral-killing, burrowing sponges just to name a few. The burrowing sponge killed off several large colonies I had before I knew what was happeneing. Most of these have come in from frags I've bought from other people. Fish QT is a must, but corals should be QT'd, too. Obviously, it's a big expense to set up a coral QT tank, but it's worth it if you've invested a lot of money on a display tank.