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Tank size: 10 Gallon
pH: 7.8
ammonia: I don't check
nitrite: I don't check
nitrate: I don't check
kH: I don't check
gH: I don't check
tank temp:
Fish Symptoms (include full description including lesion, color, location, fish behavior):
Volume and Frequency of water changes: 10-15 % every 4 weeks
Chemical Additives or Media in your tank: Ph tab once every month
Tank inhabitants: 3 other fish of different species
Recent additions to your tank (living or decoration): New decoration Cave
Exposure to chemicals: None
Digital photo (include if possible):
Also, how long has the tank been set up, and is it cycled? It's here since July 2020