Sorry to hear about your frog. Generally, clawed frogs are pretty tough and can survive quite extreme conditions. I would place the frog in a tank by itself with clean, conditioned water for a three days to "detox". Make sure you change the water each day. The frog should be ready to go back into the aquarium. FYI: do not use distilled water since it doesn't have the right amount of minerals required for the frog's well being. Spring water and conditioned tap water is OK.