If it gets hotter than a volcano I better buy a different pan
tinytoon Reviewed by tinytoon on . Cleaning Hydroton quickly Like everybody else, I usually soak the used rock in a diluted chlorine solution, rinse and dry. This is a pain if you have a large grow and you want to fire up your garden right away. I've been looking to machine wash the rock but nothing's out there that can stand the punishment, until I found and industrial dishwasher manufacture in Petaluma, CA. Stero dishwashers make a stainless steel rack washer that fits the bill (SC-25). I used one of their tray washers when a worked in the cafeteria in Rating: 5