well i got a rope fish frome someone that was not taking care ot the tank. every thing els died in that tank. i have a 20g i put him in to medicate if needed. but how long should it be by itself to make sure he is ok and not infect my big tank?it seems to act normal eating good, vary active and all that but i dont want to take a chance. why do people buy animals (fish in this case)with no plans on taking care of them?a tank only looks as good as the amount of efort you put into it.sorry for the rant.but i just dont get it
A month is standard.