It’s really hard to get things this perfectly dirty. It took me a week to get here!!! I started out with a clean tank. I let it sit in a tea bath for 1/2 day to get an overall yellow look. Then I let it sit with some pre-rusted pennies and nails/screws for 3-4 days. Last I let only the top and bottom sit in more tea for another day. After all of this, don’t throw it in the wash right away. Let it sit in the sun for a few hours. Then go ahead and wash - but make sure it’s cold wash.