Rusty Powder

Rusty powder is used together with, for example, universal medium.

You can mix it into the universe as well as sprinkle on top.

You should spray it with diluted vinegar, about 7%. or stir a mixture of all-purpose cleaner, vinegar solution and RustyPowder.

Make sure to spray and keep wet, the rust will come off with Rosty Powder within 24 hours.