Marine Fish Disease Treament Medic is a highly effective water conditioner used to control external fish parasites present in both marine and freshwater environments. It contains a reef-safe oxidizing agent and is particularly effective against: Marine Ich - Crytpocaryon irritans Freshwater Ich - Ichthyophthirius multifiliis Marine Velvet - Amyloodinium ocellatum Features Completely reef-safe Buffered to maintain physiological pH Does not harm invertebrates Does not harm nitrifying bacteria Size: 30mL - (Treats 550G of aquarium volume) How Medic works: Many external fish parasites have very similar life cycles. In particular, these parasites have an "attached" stage (trophonts), a "matured" stage (protomonts), a "reproductive" stage (tomonts), and a "free-swimming" stage (theronts/dinospores). Most available treatments do not target the free-swimming stage of the parasite which is one of the primary difficulties in dealing with these infections. Research with ciliated protozoans has shown that the "free-swimming" stage of these parasites have remarkably consistent hatching times. We have engineered our product to be most efficient during this stage. Active Ingredients: Crystallized Peroxide Salts. Directions: For in tank treatment: Use one level scoop of Medic for every 50G of your system volume twice per day. Dose once in the morning (Before 10am if possible). Dose once in the evening (After 10pm if possible). Continue to dose for 10 days. Note: UV, ozone and carbon must not be used during the treatment. Protein skimmers can be run as normal. The infection may seem to disappear when white specks are no longer visible on the fish. This is merely part of the natural cycle of the parasite and you must continue dosing the product for the entire course (10 days) to be maximally effective. After treatment is complete, run granular activated carbon for 2 or 3 days. Store product in a cool and dry location, away from direct sunlight