Garlic extreme is the oil of the garlic not garlic juice which has some garlic oil in it. they crush garlic take the juice and dehydrate the water out of it and you are left with the oils or garlic essence. as said before I feed my fish garlic and selcon every 2 to 3 days and if there is a out break I feed once a day. I find newly bought and added fish are more susceptible for parasites due to the stress they have been through. Marine Velvet is the only thing I would treat with a copper medicine.

Bill