The term "filter feeders" is rather a large scope. Many animals filter from the water to some degree. For many soft corals and animals such as dusters, DT'd will be fine but for other types such as bi-valves, non-zooxanthellae gorgonians and the like; you would do better with a zooplankton or finely minced blender much. The "mush" can also be used for certain LPS
and zoo's as some will have an easier time with that sized food particle.
DT's will also greatly benefit the pod populations and use it myself at least once a week.