New to Discus care, would love some advise from experts

[barmby]

It depends on where did the discus comes from. Wild discus may require very low pH <6.0 while home bred < 7.0 may be sufficient. the answers are very wide ranging depending on the fish origin, and current living environment

speaking of which, untreated water is no no

[Dscheng]

My setup is 60cm (64L) with 2 angelfish, 3 ram, 3 chocolate gourami, 3 otos and i plan to add two juvenile normal discus, not wild caught.
Cycled tank, Nitrates 0, 6.0 PH, 3KH,6GH and TDS 160. Do you think my setup is ok for discus?

[barmby]

No, sorry. This is overcrowding for 2 feet tank. Fishes will wither and die