Q: My water is brown! What should I do?
Dale – Anselmo, NE
A: In the spring and summer, many pond owners complain of green water caused by algae blooms—but in the late summer and fall, brown water causes headaches. If your pond or water garden has taken on a tea-colored hue, follow these simple steps to get your water back to its crystal-clear self.
An Optical Illusion?
First of all, take a closer look at the water and determine whether it’s really brown or just reflecting dead debris in the pond. Grab a clear glass, dip it in the water and hold it up to the light. Is it clear? Then it’s reflecting pond debris. Is it brown? Then the water has been colored by tannins released by dead leaves, similar to what happens when you steep your breakfast tea.
Clear Water: Add Bacteria
If your water is clear, you can minimize the brown-water optical illusion by using a natural bacteria, like Pond Logic® Seasonal Defense®, to help decompose the muck and accumulated debris on the bottom of your pond. The beneficial microorganisms found in this cooler-weather additive break down the organic materials, leaving your water looking clean and clear.
Brown Water: Add Carbon
If your water is brown, you can use Pond Logic® Activated Carbon to absorb and correct the tea-colored discoloration. To use the carbon, pour the granules in a mesh bag and place it in an area of fast-flowing water, such as in your skimmer or waterfall. Leave it there until the carbon absorbs the dissolved organics. Typically, 4 to 6 pounds will treat 1,000 gallons of water for two to three months.
Remove Dead Debris
In addition to either adding beneficial bacteria or using activated carbon, you should also remove any accumulated dead or decomposing debris in your pond with a vacuum like the Oase Pond-O-Matic XL. If leaves or other blown-in debris continue to be a problem during the fall months, consider covering your water feature with netting, like the Pond Logic® PondShelter™ Net Kit.
Pond Talk: Have you had success using activated carbon in your water feature?