I am new into having Discus. I just brought some Discus about 1 week ago, but they are not feeding since then. Please advise what should I do in order to get them start feeding. Thanks.
She is not eating could be due to the new environment. Give her time to settle down.
You can deworm your fish with the following:
If the case is not too serious, you can apply antibiotic for five days. Water changed and same treatment everyday for five days.
When you see white feces are present in the tank, and the fish will not eat then use: Metronidazole B.P. Tablets 200mg, Dosage: 2 tablets for 50 gallons water. Change water and repeat the treatment everyday for 5 days. When white feces disappeared and see black feces, internal parasites cleared.