Hello,
How much weight, overall has he lost thus far?
I would get another fecal done on him to see if he has worms or parasites. That can really
affect their appetites.
Which tube bulb brand are you using, do your other 2 have the same brand as he does?
I would try to get some chicken or turkey baby food, mixed with squash or sweet potato baby
food to give to him, a few times per week to help him out.
Has he
black bearded at all?
Since he isn't feeling well, I would try to keep the tank around 75-80F overnight to help boost
his immune system.
Can you try to get a copy of the blood test for us to see also?
Tracie