Marc Weiss' Black Powder will blow you away! For advanced hobbyists and professional applications to maximize growth and color in anemones, tree corals, xenia, sea squirts, cucumbers, sea apples, zooanthids, large and small polyp stony corals, goniopora, sinularia, carnations, euphyllia, monastrea, millepora, many filter feeders and cryptic organisims. On target, direct pigment priming and growth enhancement. No plankton, no waste! Powder is almost totally absorbed and utilized by your reef life without undigested particles being left over to pollute.