JOURNAL method:

Remove old root system manually, removing as many small roots as possible.

Then rinse with very diluted bleach solution plus lots & lots of H2O. Will let you know if there are any adverse reactions to the bleach.

Theory is that the bleach kills the bacteria, roots, etc.

If you boil it, here is one thing to keep in mind. Try not to put your roots into the hydroton while it is 'hot.' The clay keeps the heat/cold for longer than usual, so beware of the temperature of the clay balls when you dip your roots in 'em.

:rastasmoke: RastafarI

TGF