Im new to the fish thing, and my fish have recently gotten ick. I went out and bought the medicine, and I know the neons are sensitive, so I added half. I even did 25% water changes between does, but the 3 of the 4 neons died. Does anyone know what I should do?

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I have 10 Gallon Freshwater Aquirum
1-8 Neon Tetras (Havin trouble right now)
2 Guppies (M+F)
1 Corrie ... Hopin to get another
a Placco in a week

Email me ~ Stuster526@aol.com