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Why do I have foam on my pond? | Decorative Ponds & Water Gardens Q & A

Why do I have foam on my pond?

Q: Why do I have foam on my pond?

Dom – Bellingham, WA

A: Foamy pond? No, the neighborhood kid (hopefully!) hasn’t dumped dish soap into your water garden or fish pond. The bubbly white or gray stuff you’re seeing on your pond’s surface is actually being caused by high levels of organic material in your pond. It’s natural – but it indicates an out-of-balance problem in your pond.

Question Your Water Quality

Foam forms when excess organic material has accumulated in your water garden. This happens when too many fish are living in the pond, you’re overfeeding them, you have inadequate filtration or there’s runoff flowing into the water.

When this nutrient-laden water pours down your waterfall, the air and water collide, causing the proteins and other organics to be trapped inside bubbles rather than turning into ammonia and nitrites. That air-water collision is why the foam seems to form at the base of your waterfall.

Tips for Removing Foam

So how do you get rid of the white frothy stuff? You can remove the foam in several different ways:

1. Use a defoaming product: A temporary solution is to dissolve the foam with a fish- and plant-safe defoamer, like Pond Logic® Defoam™. You simply shake the can and pour its contents into the water. The foam will disappear in no time.

2. Do a partial water change: To reduce the overall amount of organic material in your pond, you should drain the pond halfway or so and add fresh water and the defoamer. This will remove some of the organic material, dilute what remains and prevent foam from forming.

3. Reduce your fish population: Too many fish will produce excess waste, which means more foam. Remember that the rule is to allow 1 inch of adult fish per square foot of surface area – so if you have too many koi or goldfish in your pond, you might want to think about finding new homes for some of your finned friends.

4. Feed the right amount: If you’re feeding your fish too much, the excess food adds to the extra organic material in your pond’s water. Only feed your fish an amount they’ll gobble down in a few minutes.

5. Beef up your filtration system: A more powerful filtration system will remove those excess organics, so if you really want to erase foam, think about going bigger with your filter.

If you do suspect the neighborhood kids have dumped soap into your pond, your fish could be in danger. Do a water 90 percent water change before chasing the perpetrators down.

Pond Talk: Do you notice whether foam forms more often during certain times of year?

Pond Logic Defoam - Eliminate Unsightly Pond Foam

I have a ton of this black muck in my pond. What can I do about it? – Ponds & Lakes Q & A

Got Muck? Use MuckAway®!
Pre-order For Fish Day Online… more info

Q: I have a ton of this black muck in my pond. What can I do about it? Sam – Little Rock, AR

Let’s See What You’re Made of, Muck
Nothing spoils your summer fun like jumping off the dock into your pond, only to become a human lawn dart… stuck in layer upon layer of pond muck. No longer will you have to battle muck for possession of your favorite flip – flop while walking along the shoreline of your lake. Gather your torches and pitchforks; together we will fight off the monster we call muck!

The first step to effectively treating any nuisance in your pond is to understand exactly what it is and how it works. Muck, simply put, is an accumulation of fish waste, plant decay, and other debris that makes their way into your pond. While some of the materials that make up muck result directly from the inhabitants of your pond, much more finds its way into the water body in the form of blowing debris (leaves and grass clippings) and runoff from surrounding areas. As this cache of organic waste decays, it breaks down into slime, or as we call it, muck.

So Long Slime
What is a collection of decomposing organic debris afraid of, you ask? Oxygen and bacteria of course! If your pond is not being aerated, chances are a thermocline has established in the water body. The upper portion of the pond that has exposure to air will contain some oxygen while the lower region tends to lack sufficient levels of O2. Implementing an aeration system into the water body will circulate the contents of your pond and infuse the entire water column with oxygen. If your pond is six feet deep or shallower, Fountain Aeration can provide sufficient aeration. If the pond is deeper than six feet, you would be better suited with bottom-diffused aeration like the Airmax Aeration System. This influx in oxygen aids the growth of aerobic beneficial bacteria. These bacteria then feed on this organic debris and assist in the decomposition process. Aerobic beneficial bacteria are efficient and thrive on oxygen and, when present, will fight against muck deposits like your own personal pond ninjas. If you supply your pond with aeration, and thereby oxygen, you will be setting in motion events that will ultimately lead towards a cleaner pond.

Send In The Bacterial Backup
While there are beneficial bacteria naturally found in your pond, the presence of muck is a sign that they are severely outnumbered and overworked. You can boost their numbers by adding beneficial bacteria products like Pond Logic® PondClear™ and MuckAway™ to your maintenance regimen. As you might have figured out by the name, MuckAway™ is designed to work against bottom dwelling pond scum. MuckAway™ is formed into precision release pellets that sink to the bottom of your pond or lake where they can start working in the areas you need bacteria the most. Due to their buoyancy (or lack thereof), they are great in areas that experience high water flow like canals and lake front property. When used with aeration, MuckAway™ can eliminate up to five inches of muck a year! To apply MuckAway™, simply use the included scoop to apply pellets to problem areas every four to six weeks. An eight pound bucket of MuckAway™ will treat up to 16,000 square feet.

…And Never Come Back!
Now that you have banished muck from your pond bottom, take some PROactive steps to ensure it remains a distant memory. Adding Pond Logic® PondClear™ in your pond every 2 weeks will help sustain a healthy bacterial count. These bacterial treatments, paired with constant aeration, will ensure you will feel more sand between your toes this season and less squish. For more information on treating your pond with bacteria click here or read our Aeration Articles to learn about the many other benefits of aerating your pond.

Pond Talk: Have you used MuckAway™ in you pond or lake? Were you happy with your results?

Got Muck? Use Muck Away® - Eats up to 5 inches of muck per year!

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