feeding frozen rotifers
 

is it ok to feed frozen rotifers to my clam, anemones and corals?

well i feed frozen mysis to corals..

Rotifers are a good prey size for some coral but I think they're too small for most anemones and too large for clams. Phytoplankton is a better choice for clams if you want to feed them. My sebae anemone readily takes krill and silversides.

I don't think feeding small, dead food into the water column is a very good idea. Most of it will settle in the tank instead of being eaten, and this will pollute. Adding some live newly hatched baby brine shrimp to the tank would be a better idea...or live rotifers.