If you reaaaallllly wanted to try a clam, I'm sure some of us (say me, say me) would be willing to help you make some room by offering to make new homes for some of those shrooms & zoos.
Seriously, those are nice corals you have there.
You must be doing a lot of things right for them to be taking over the tank like that. If you're ever in Burnaby, send me a pm & you can come over to check out clams living with mushrooms & zoos.
Anthony
<to Moderators: Need Drooling emoticon>