how many discus in 3ft 200 litre Planted tank ?

[sawzai]

harloooooo . how many discus in 3ft 200 litre Planted tank ?

filter : atman df-1300 ( 1500 l / hr ) - stated , not sure if its really 1500 l / hr
media : 2 coarse filter pad , 2 polyester , 1 L biohome plus , 250ml seachem purigen , 1 L ceramic rings.

tankmates : 7 cardinal tetra , 6 corydoras.

tank for discus till adult and till they die. how many ?? 6 to 7 ?

[freyster]

4 discus max for optimal growth