@ofzakaria has a big clam but I doubt he’d be lending it out again so soon.Dosing the tank with Fenbendazole to eliminate the blue clove polyps worked really well. No sign of return after 2 months. It did kill all of the other softies in the tank except the mushrooms. It also killed some, but not all, of the snails. The nassarius snails survived unscathed. Mini-maxi stars, hermit crabs, copepods and amphipods were unaffected. The fish have never been healthier.
I am looking at winding the tanks down over the next couple of months planning to take it down completely over memorial day weekend. So for the moment I am just enjoying them. I do plan to have a "band-saw party" in early May to frag up some of the large encrusting colonies.
My one tank goal that I never realized was to have a giant clam of some type. It is too late for me to consider buying a clam with only 2-3 months left of tank ownership. Until I had the calc reactor I would not have contemplated it as my water conditions were too variable. If somebody has a clam that needs a "foster home" for a couple months, I'd be, of course, happy to oblige.