Not despite washing with water but cause it stay wet for long enough to allow fungus to grow.
The same will happen if you wash with peroxide and dont let the reed dry. That is cause peroxide loses one of the oxygens very fast in the air and turns to water.
Peroxide also doesn't kill 100% all the fungus types so that black stain is more or less harmless but not 100% sure, better discard the reed.
The same will happen if you wash with peroxide and dont let the reed dry. That is cause peroxide loses one of the oxygens very fast in the air and turns to water.
Peroxide also doesn't kill 100% all the fungus types so that black stain is more or less harmless but not 100% sure, better discard the reed.