hi. Two things come to mind. Parisites or your water/water conditioner. The quickest of these to change is the water. Some water conditioners lower the ph of your water into the acid level. Make sure your water conditioner is not the fish type with slime coat stuff in it. To have an acurate fecal done, you must have a fresh poo, not died up. Put in plastic bag, and seal. if you can't find a vet to do it , google Dr. Frye, his are just 18$ and he's quick and reliable.