Fritz Bug Out is an effective all-natural iodine-free herbal dip treatment for the removal of unwanted parasites on corals. Aids in the removal of Acropora eating flatworms (AEFW); planaria flat worms; Zoanthid eating nudibranchs; Montipora eating nudibranchs; and some pest crabs. Great when introducing new corals to prevent introduction of parasites while promoting healthy tissue and colours. Fritz Bug Out is safe for all coral species. FR03989 Casebuy:12.