Hello,
How is your boy's nail doing, have you gotten the bleeding stopped now?
As suggested, neosporin or polysporin are fine to use or even raw unpasteurized honey,
too. If you do use honey on the nail bed, be sure there aren't any bugs in the tank that
could be attracted to the honey.
He should be fine & hopefully his nail will grow back. If it doesn't though, he will be alright
missing a nail.
Tracie