My lil Marigold does not seem well. I'm new to ducks. Shes 5 or 6 weeks old and is breathing heavy, laying around, not eating much, not following her flock. I love her so much and am very frightened for her. I bought some "Electrolytes Plus" but for the life of me, cannot figure out the darn dosage! It says 400g pouch to 750L of drinking water. OMG....I don't have anything big enough to do that and don't know how to convert the dosage. the package says 1 tsp = 5 g. Also bought epsom slats and can try that. Please help.