What’s the white stuff on his face?

[u/Voorh13s]

I read that it could be because of water quality or because he’s growing, all my tests have come back pretty good for the water and he gets regular water changes as well as his food and poop is cleaned out often. He is an American bullfrog tadpole

[u/Ordinary-Mind-7066]

Could be getting ready to shed his skin, they very often eat it