I had a platy that i suspected had internal parasites but he died before i could begin treatment. his only symptom was a sunken belly. well i just did 2 doses over 48 hours using jungle fizz tabs, so i took my shrimp out so that they wold not die. its been 72 hours and 2 tablets later. i added the carbon back into the filter. now how long should i wait before i can put my shrimp back into the tank? also it looks like one of my platys is showing symptoms that the other one had. but my ammonia levels are high so should i be concerned?