Hi,
I have three 5" cuban tree frogs as pets. All are wild caught because of dire circumstances for them.
I have two frogs in one terrarium together exoterra 18x24 tall. Temp and hum are fine.
One named Billy has runny diarrhea, losing weight fast, not eating that I am aware of
The other named Hanny passed firm bloody stool in bath two months ago. He ate a few crickets out of my hand last night, so I know he is eating what I give him. Have not seen bloody stool or hardly any stools lately. I clean the branch today and did find one hard stool on top and runny stool on paper towels this morning.

I purchased and have dosed fenbendazole 3 days in a row, waited ten days and did it again and now it has been a week and both look poor and one has runny stool.
I have been sterilizing the tank almost daily, placing all their stuff in extreme hot water and spraying with colloidal silver, changing paper towels and water daily or sooner if someone poops.
I bought some flagyl, I have one 250mg capsule filled with powder. I need help with how much to give them. I have been researching the internet for days and cannot find any dosage that makes me feel comfortable.
The last one said put half the pill with 1/2 gallon of water another said to bathe them in it and then a vet pdf guide said it could slough their skin off if placed on their back. There are no frog vets here, I'm in Florida. Cubans are not friends to many here. I need help on how much to give, I do not want to chance overdosing.

The other frog is in the same set up by himself, he has been opening his mouth for days now. I have to hand feed him, and place him into his bath daily. He has broken arm and bad back and cannot climb due to outdoor injury. I heard him screaming outside and that is how he become my pet. He was hobbling around quite nice for the past year and now all of a sudden he is jaw dropping. He hasn't been passing many stools lately and when he does they are real tiny and hard. I also wormed him with Flagyl. I have been dusting all his crickets this week with calcium d3 powder, normally I only do this 1-2 times a month. I read that jaw dropping could be not enough vitd.

Any advice would be much appreciate. Thank you!
Wendy