I seem to have assumed responsibility for my sister’s 30L BiOrb fish tank as she isn’t currently well enough to take care of it. There are two fish - a Siamese Flying Fox and a Pleco.
The actual tank seems fairly easy to maintain but I’d like to add a couple more fish. Can anyone help with recommendations of what to get please? I don’t want to over stock the tank.
Also, do people turn the tank lights off at night? My sister didn’t but most of my google searches say you should.