I have a sunset gourami who has been having white stringy poop, so i went out and got some metro for it. Right now it is isolated from the other fish, but i was wondering, since it obtained the parasite while it was in the main tank, should i just treat the entire tank? i have a 20H aquarium with low light plants and shrimps. the gourami still has a healthy appetite, and the other fishes are all acting normal. does anyone know if the metro is safe with shrimps and other inverts?