To add to the already great recommendations and advice I would fill your tank up more than half way. Give your frog as much water volume as you can. Fill your tank to 3-4 inches from the top to prevent him from escaping, but still getting the most out of your aquarium. Make sure you have some type of good fitting lid no matter what. Even if you just get one of those screen tops and place a weight of some sort on it.
I will also add on he food discussion that bloodworms(frozen/thawed first) are only good as an occasional treat. The nutritional value is about as good as you eating only candy.Never feed anything while it is still frozen.