According to the sticky, 2 teaspoons of salt per gallon to treat ich. I have a 150 w 2 small p-bass (2-2 1/2"). Noticed the white specks the other day, which I am told is ich. 300 teaspoons=100 tablespoons, 4 tablespoons =1/4 cup. This would = 6 1/4 cups of salt for my 150. It just seems like alot...if this is wrong or if the size of the bass is a factor, please let me know. Thanks folks