The "hole" was/is a white wound, it seemed a bit sunken, but it looks to be healing.
He doesn't act sick at all.
Yes I do a 85% water change twice per week, one only water..one with the vacuum, i got two 2.5's so i do the 5 at the same time, i just heard the more water changes the better.
no i don't test for ammonia, i have a ammonia test kit tho.
my tank has a filter.
i do it while im already all covered in fish water and have the stuff out
its like killing two birds with one stone *lol*
and he looks the happier for it