Thanks for that Jack. I would be interested in any advice. By some miracle, all 6 are still alive this morning. The active small one still seems happy, other sitting around quietly, most with head up except the one with the ulcer on his eye was low to the ground and bunched up, and the one with the very plastic-y skin was lying down with his legs bunched in. I think one of the pink-y ones might have had a seizure as he was shaking for about 10 seconds, but then it stopped and his body didn't move from the spot. Gave them a salt bath while I cleaned the hospital tank - all perked up except the plastic-y one, and the one with the ulcer on his eye only a little, but may seem a little bit brighter than yesterday. The other frog still has a massive right thigh. All but one of the frogs is shedding its skin. The plastic-y one still seems to be shedding the same skin from yesterday, which seems to have stopped shedding around his head - should I try to carefully pull it off? The one with the ulcer on his eye (which hasn't changed today or yesterday) is a pale green, the others are a mid green instead of their usual dark green. Under torch light, the plastic-y one has a grey/white-green tinge to the skin on the back of his head and back - possibly a fungal infection? Should I treat with malachite green?