Betta Fish Bowls, Habitats, and Accessories
What would be a good size for a QT/hospital tank? Does it depend on how big your tank is?
My tank is a 3.5 gallon tank, so would a 1 gallon tank be ok for a single betta?
And as far as substrate is concerned, do I need gravel or plants? (I know I'll need a filter and a heater)