I have two fish, a Plecostomus fish (Flash) and a Koi Fish (Sharptooth). I have had Flash for about 5 years now and Sharptooth for about 2 years. I figured that it was safe to add new fish to the tank, so I bought 3 fantail goldfish and 4 feeder goldfish. One of the fantail fish got Ick on the fins and quickly infected the other fish. They all died except for the two fish I originally had. Flash and Sharptooth now have this cloudy residue on their eyes. I changed the water, adjusted my ph levels and put QuICK Cure in the tank and removed most of the decor. Is there anything else I can do?
Channy
ps-I attached pictures

Channy
ps-I attached pictures
