I picked up a little crown tail from Petsmart yesterday because he was in horrible condition. his fins were shredded, gills were swollen, ammonia burns, was thin, and because he had a nice long parasite poop hanging out.
He's on aquarium salt, epsom salt, and Tetra Parasite Guard. I've had him for about 24 hours now, he's pooped about 10 times between yesterday afternoon and last night. This morning when I checked on him and to feed him, there was nothing floating around his tank. When I checked again just 10 minutes ago there was a black poop floating in the tank with a parasite in it. I scooped it out to take a look and it was also pretty mushy.
In the 24 hours I've had him, he's had two water changes. He's currently in a half full quarter gallon hospital tank.
Tanks size is half a quarter gallon that stays around the 78*F range. No tank mates as he's in quarantine. 1/4 tsp aquarium salt and 1/4 tsp epsom salt have been used for 24 hours now as well as a close to accurate dosage of the parasite medication. He's been kept in the dark to keep him relaxed.
Should I be worried about this floating, black poop or is it a side effect from the poor care and and sudden medication? He's only eaten 2 pellets in the 24 hours I've had him.