I would give him a chance first with the bacterial med as sometimes fish can surprise you.
Ph shock can take 7 to 14 days to kill a fish.
Always test the bag water for ph when you get new fish, this way you know how long to clamatise them if there a big difference in ph.
I find this method the best for ending a fish life if you can't fetch yourself to hit it on the head.
Bucket of cold water and add ice cubes till the water freezing cold.
Add the fish to the bucket of frozen water it takes about 30 seconds, but leave the fish in the bucket a while to make sure its passed on.
Ph shock can take 7 to 14 days to kill a fish.
Always test the bag water for ph when you get new fish, this way you know how long to clamatise them if there a big difference in ph.
I find this method the best for ending a fish life if you can't fetch yourself to hit it on the head.
Bucket of cold water and add ice cubes till the water freezing cold.
Add the fish to the bucket of frozen water it takes about 30 seconds, but leave the fish in the bucket a while to make sure its passed on.