Well its not diarrhea, its just loose. Most of the time it gets dissolved in the water.

Now if it was a serious infection, his behavior wouldn't be the way it is now right? I mean he would not be eating, would look different, lethargic and so on....or am I wrong?

This was his first week eating horn worms, could this new food item be causing this or maybe lack of food with exoskeletons? All they eat is mostly night crawlers but his stool has been loose since I got him yet he looks healthy.