I've wanted a clam for ages but just haven't since I thought clams needed a sandbed (I guess they can just anchor on a rock)..ignorant me. So, then I got thinking on the requirements of them. Sure, lots of light and keeping your alk/Ca up since it is a sponge. But what about phyto? Is it pretty much a requirement on dosing it? I feed my other corals rotifeast and mysis and the only other "stuff" that I put in the water column is whatever I scrap off the acrylic when I clean the tank.