Twilight  Blue is formulated to give your pond a long lasting natural blue color. One quart of Twilight Blue will treat one surface acre of water, 4 to 6 feet deep. Twilight Blue should be added as needed.

It's important to never let the blue fade, for this will give weeds and algae a chance to become established, making them difficult to control. In colder climates, Twilight Blue should be added just before winter to stop sunlight from penetrating the ice.

Please Note: One Quart of Twilight  Blue is equivalent to regular strength gallons on the market!