help I bought 10 cardinals on thurs and I can only count 5-6 left I bought them from pet land in red deer and they seemed fine at first then I started to see ich on them. I don't want to treat the whole tank if I don't have to I have 6 panda corys doing well no ich and a abp in the tank its a 40 gal breeder with lots of plants ph 7.2 gh80 kh 60 no nitrite and no nitrate. ive herd that cardinals need 6.0 to acclimate proper but the pet stores water was very hard and high ph I acclimated them slowly and they seemed very happy at first now they hide in the back of the tank. does anyone have some suggetions as I want to get a school of 24 cardinals before I get some discuss. thanks rob