Mangrove Jack's Deltafloc otherwise known as Whirlfloc is an extract of red seaweed specifically formulated to coagulate unstable proteins in brewery wort. Specifically formulated as a fining agent which clarifies wort and improves wort sedimentation. Mangrove Jack's Deltafloc leads to a cleaner and more efficient fermentation. This comes in quick dissolving, highly soluble tablet form, with 10 tablets in a pack. Add 1 tablet per 19-23 L mash about 15 minutes before the end of the boil.