That's mostly what I have to offer in terms of help, my vet tests their poop for $15-~$20 I think. When they have this or anything really they hang their head low and tail down and lay or stand and stop frolicking. Usually it's one dies before they're treated in my experience. I give them ASAP probiotics, electrolytes/vitamins and they're on medicated feed. If they don't improve in a short but I treat with corid based on my above comment about dosage. Corid is expensive yes but maybe someone can find it cheaper or something ... You can keep it around though... Hopefully most of them make it for you.