I have some Neon Tetras in my tank. 4 days ago, I've notices one of them has white spots on it. I know it is ICH. I've got ICH-X and treated the tank with it. And since my quarantine tank is occupied with my new Betta fish. so I've decided to treat my entire main display tank where I keep my cherry shrimps, panda cories with neon tetras. I've also raised the temp to 84 with ICH-X after 4 days of treatment and daily water changes. Water parameters are good (I've tested it twice daily) but fishes are still dying one by one. I am very discouraged now, I get that I will lose fishes along the way into this hobby... but I don't get why my fishes still keep dying... any suggestions on what mistakes I've made?