Athena Renew 5 GallonProduct description Athena Renew contains etidronic acid (HEDP) which chelates and binds metals and minerals that build up in irrigation lines. High levels of food grade hydrogen peroxide oxidize and remove biofilm and other organic buildup. This combination is more powerful than strictly acid based line cleaners providing growers with a more robust and concentrated solution for optimal irrigation system maintenance. Features: Removes heavy biofilm