how many?

[g.c.discus]

have read on this site but can not find now. how many litres per discus should you have? my ank about 250 litres. changing 50% of water every three days.

[Merrilyn]

The ideal is one adult fish per 40 litres of water, so 6 discus would fit very nicely in your tank, and still allow you room for some other tankmates, like cory cats, cardinal tetras or other types of tetras.