Actually white stringy poo is often a sign of internal parasites, Pimafix is a great medication that will help to treat this issue. Normally white stringy poo doesnt come after treatment, it's normally a sign that something is wrong in the intestines of the fish. It could be something with what you're feeding him, it could be something such a decor or gravel that may of had something in it/on it that could of gotten him sick.
My 7" EBJD had white poo after I got him, and I treated him with Pimafix and it cleared him right out, and now's he is doing fine.
its acting normal, when i come to my tank and tap on the lid he comes and goes to his corner with his friend (albino tiger oscar(who i havn't seen any poop hanging off of yet)) they both eat and its all good but the worst thing i could have fed him is a common black housefly.is it acting normally otherwise? did you feed anything unusual?
i have access to a 10 gallon tank but there is fish in it right now. would i be able to give him medecine in a tank that has other fish that may not have this bacterial infection? willl it harm them?The stringy white poop hanging off it is because of internal parasites. I had the exact same situation with my convict cichlid. It was easier for me to treat it though because I was able to put it in a 10 gallon tank. I don't know if you can do that. I used Jungle Parasite clear, and after about 3 days he was healthy and ready to move back to his home. He's doing fine ever since.