I would get those roots out and spray them down with PH adjusted water. With the peroxide I would get some 3 Percent, the kind that is used for cuts, Wally Mart. You can use 100ML in a liter of distilled water. I am reaching, hope that someone else will give some more feed back.
I know that after making such a large investment that this is probably not what you expected so I am trying to help as much as I can bro.
Adieu