I want to remove the black deposits on the wood baskets in which my Vanda
orchids are growing. Mostly for aesthetics, but I don't want to tear the
plants apart and put them in new baskets. Someone from the AOS mentioned a
product called "xeratrol" or something like that (not sure of the spelling
-could be something related to a peroxide). Does anyone know what this
chemical is and where to get it - or another solution to the problem?

Thanks

Charles VanDyke