I don't think I could get a clam cuz I've only got a 20 gal but ill keep that in mind for the future. Never know what tanks ill have in the future.You gotta start somewhere. And about the Reef Roids, I have some but will not use it because someone here mentioned that their clam had a bad reaction to it. I can't remember if he tried spot feeding or maybe the clam closed up to consume the food. Anyway just in case you get a clam someday do not spot feed them.