UPDATE....
40 gallon tank.
4 panda cories
3 sterba cories
1 bulldog pleco
6 white cloud
2 bolivian rams
no ammonia/no nitrate/ no nitrite
Ph appx 7
Temp appx 27 celsius
Got the discus 2 days ago.
When I came back from work today the guy was lying in the bottom of the tank. His slime coat seems like it's pealing off. One of is side fin was sticking to his body. He finally managed to swim but that was with a unusual shivering once in a while. He seems darker than normal.
He does not want to eat. He eat on little flake of shrimp and that's it.
I added to the tank the recommended dosage of melafix and so aquari-sol. I felt so bad seeing him like this. I wanted to help.... I think he has some parasite infection... I am now increasing the temp progressively.
Did I do the right thing ?