Adult Discus have stopped eating

[Jack Frost]

Hi guys, I have two adult Discus who have stopped eating, I have five juveniles who are eating very well, it's been about two weeks now and they wont eat a thing, they use to love Beefheart but now they just won't eat anything,
I keep checking the water parameters and they are ok, I just understand why they won't eat.

[Vinni Smith]

Hi guys, I have two adult Discus who have stopped eating, I have five juveniles who are eating very well, it's been about two weeks now and they wont eat a thing, they use to love Beefheart but now they just won't eat anything,
I keep checking the water parameters and they are ok, I just understand why they won't eat.

I had the same issue.
I used Kusuri De-Wormer and less than 24 hours they are eating well