Hello, My family and I have a Juwel Rio 240l tank with 8 neon tetras, 6 panda cories, 5 male fancy guppies, 4 honey gouramis and 1 juvenile super red bristlenose pleco. Before one of my neons lost its red colour and I thought it was neon tetra disease. But after a while it became red again. Another neon's red colour became pale again about a week or two ago and I have now spotted some white spots on his side and pectoral fin, and I'm guessing it's neon tetra disease and ick. He also doesn't shoal with the other neons. I had a guppy die of dropsy and a neon die of NTD I think and I couldn't save them. Is there anything I can do to save the neon? (I don't have a hospital/quarantine tank) If medications are required, what changes will it make? Will medications affect the cories and plecos cuz of their hard scales? Thank you and have a nice day.