First thanks for responding, the tank is a 100 gal, I change 25% of the water every week, all my water parameters are good- nitrates, nitrites, am, etc. I have a canister filter, use RO Water, keep the temp same as the online store which I believe is a reputable one, the discus age i really dont know except they were about 1 1/2" to 2" when I got them. I have had them for about 2 months. I dont have pics when I first got him, my other discus is ok. I have cardinal tetras, rummynose tetras, one nerite snail , four zebra loaches, some swordtails and septra tetras. They all get along good and the discus swim right up to me when its feeding time and they all know which side I usually come to. I put some salt tablets and it seems like it is a little better. I will try and take some better pics. Thank you again