Marine Snow is not DTs. I think you misread mbtulimaas post.
...also pur a little DT, or marine snow in the tank...
DT's is live and must be refrigerated. It contains 3 species of phytoplankton and is concentrated.
Marine Snow is other organisms and is not live. I've heard that a large percentage of it is water, too.
I think this is found on the back of the bottle...
A Natural Planktonic Food for Filter Feeding Marine Invertebrates. This first of its kind product reproduces the special colloidal biogenic suspended matter found in natural seawater. These colloids, collectively called "marine snow" by ocean researchers, are known to be an important element in the food chain of marine ecosystems. MarineSnow is a natural planktonic food for filter feeding marine invertebrates. This first of its kind product reproduces the special colloidal biogenic suspended matter found in natural seawater. These colloids, collectively called "marine snow" by ocean researchers, are known to be an important element in the food chain of marine ecosystems. They have been a missing element in closed system aquaria until now. MarineSnow meets the special needs of tropical coral reef and cold water marine animals that feed on particulate and dissolved organic matter, phytoplankton and zooplankton. The formula for MarineSnow is based on natural components of ocean plankton, does not contain yeast or egg solids, and is blended to provide food packages of the right size range for filter feeders. The formula includes suspended microscopic particles ranging in size from under 20 microns up to 150 microns, and the colloidal clumps formed when it mixes with seawater are macroscopic. Ideal food for soft and stony corals, anemones, hydrozoans, feather duster worms, clams, crinoids (feather stars), sponges, tunicates (sea squirts), foraminiferans, and other filter feeders. Shrimps, brittle stars and even fishes will eat MarineSnow colloids. MarineSnow therefore replicates plankton feeding behaviors for these creatures.