It's only in the tiny cup during water changes and because it's way easier to photograph it when it's got nowhere to hide The hospital tank is 5 gallons with a heater. I get that isolation isn't the greatest for a shoaling species, but if I'm not sure what it is, I can't tell how contagious it is so...

Been having problems with a cory and was suggested to try asking here. 1. Water parameters a) Temperature range 75F b) pH 7.8 c) GH 20 d) KH 10 e) Conductivity or TDS (if GH and KH aren't provided) 500TDS f) Ammonia, Nitrate, Nitrite levels (Most LFS's will check your water and give a list of readin...