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The string algae seems to grow in just a few hours in my stream. What can I do? | Decorative Ponds & Water Gardens Q & A

Q: The string algae seems to grow in just a few hours in my stream. What can I do?

Q: The string algae seems to grow in just a few hours in my stream. What can I do?

Edith – Marion, IN

A: String algae. It seems to just grow and grow, leaving a tangled mess of green slimy stuff in your stream and water garden. Like other types of algae, string algae thrives on sunlight and excess nutrients like fish waste and decomposing organic matter in the water. If you want to get rid of it, check out this five-step plan designed to get your string algae problem under control.

  • Add Plants: Water lilies, water hyacinth, water lettuce and other floating aquatic plants look much nicer than algae, right? These ornamental plants will compete for the food source algae uses for growth, so plant away! A simple rule of thumb is to have 60 percent of your pond covered with submerged, floating and marginal plants.
  • Ration Fish Food: Those pellets and sticks are necessary to feed your finned friends, but keep in mind that fish food adds nutrients to the water in two ways: as wasted food that the fish don’t eat, and as waste after the fish digest it. Monitor how much your fish actually eat and cut back if possible.
  • Pump Up Filtration: If your filtration system isn’t powerful enough to handle your pond’s total fish load, you’ll wind up with burgeoning algae growth and, in worst-case scenarios, lethal levels of ammonia – neither of which you want. Many filters on the market are rated for ponds containing no fish or minimal fish, so get a filter that is rated for at least two times the water volume of your pond.
  • Turn Up Aeration: Beneficial bacteria, like those found in the DefensePAC®, naturally break down fish waste, but they need oxygen to thrive and reproduce. By adding a PondAir™ Aeration System, you’ll boost the oxygen in the water, increase your bacteria levels and reduce the nutrient load, thereby reducing algae growth.
  • Use Oxy-Lift Defense: As needed throughout the season, use Oxy-Lift™ Defense® to lift string algae from waterfalls, streams and rocks. Simply shut down your waterfall, sprinkle the powder directly onto debris-covered areas and watch it instantly start foaming. In 24 hours, it will have removed the algae. Be sure to pull out any debris with a pond net.

String algae may seem like a never-ending battle, but you can manage it with these tried-and-true methods. Good luck!

Pond Talk: How often do you need to scrub string algae from your waterfall or stream?

Lift Debris From Waterfalls Instantly - Pond Logic (r) Oxy-Lift(t) Defense (r)

One of my fish isn’t swimming upright. What’s wrong?| Decorative Ponds & Water Gardens Q & A

Q: One of my fish isn’t swimming upright. What’s wrong?

Q: One of my fish isn’t swimming upright. What’s wrong?

Cherie – Englewood, CO

A: Unless you’ve taught your pond fish some pretty cool party tricks, it’s possible that they’re not getting enough oxygen due to a lack of aeration.

Fish will display some odd behaviors when they’re not getting enough oxygen, including gasping for air at the surface, hanging vertically in the water, and spending a lot of time around the waterfall or stream where oxygen levels are at their highest – at least for the few hours each day when the pump is running.

Some other telltale signs of insufficient aeration are:

  • The water in your pond appears to be stagnant in certain areas
  • You’ve noticed a growing mosquito problem
  • Algae growth always seems to be a battle you can’t win
  • Muck has accumulated at the bottom of the pond

Medical issues, like swim bladder problems, could be causing your fish to swim sideways, too. But, before you take your finned pal to the veterinarian, try adding or adjusting the aeration in your water feature. You can also check your ammonia and nitrite levels using a water test kit.

If your pond has a lot of fish for its size, or is a medium or large water garden or koi pond up to 16,000 gallons in size, consider adding an Airmax® KoiAir™ Aeration Kit. Its energy-efficient design includes a dual diaphragm pump that infuses oxygen into the pond while being virtually maintenance free.

If you have a handful of fish in a smaller pond that’s up to 2,000 gallons in size, check out the Airmax® PondAir™ Aeration Kits. It’s designed for decorative ponds and water gardens, and features an airflow control valve that allows you to adjust the aeration output with the turn of a dial.

Aeration should help your fish swim upright again. But if it’s still acting strange after you’ve pumped up the oxygen, you may want to check in with your veterinarian for medical advice. Good luck!

Pond Talk: What’s the strangest thing you’ve seen your pond fish do?

Water Testing System For Ponds - PondCare(r) Master Test Kit

Isn’t the Waterfall Enough? | Decorative Ponds & Water Gardens Q & A

Q: Isn’t the Waterfall Enough?

Q: Isn’t the Waterfall Enough?

Staci – Bethel, VT

A: As your waterfall gurgles and churns gallons of water, it would certainly appear that your pond is getting plenty of aeration. All that action does, in fact, help with gas exchange and infuse oxygen into the water. But it isn’t always enough, especially if you run your waterfall pump for a short time during the day.

If a pond isn’t aerated enough, expect to see these telltale signs:

  • Algae Battles: Algae thrive in calm water that’s devoid of – and in need of – oxygen and beneficial bacteria. If you regularly fight algae blooms, that means your pond is out of balance and could use some additional oxygen and movement throughout the entire water column.
  • Oxygen-Starved Fish: Fish that need more O2 will hang out beneath your waterfall, where oxygen supplies are the densest. They may also be coming to the water surface, gulping and gasping for breaths of air because there’s not enough in their environment.
  • Too Many Fish: The general rule for a fish population in a pond is to allow 1 inch of adult fish per square foot of surface area. If you have too many fish, or your existing population has outgrown their space, aeration is critical to their health and well being.
  • Stagnant Water, Mosquito Boom: Is the water stagnant in certain areas of your pond? Are you suffering through a mosquito boom in your backyard? These little pests prefer to lay their eggs and raise their young in still water – so you might have created a perfect mosquito habitat!
  • Muck Accumulation: Decomposing plant matter and fish waste build up when the water is still and your biological filtration system – beneficial bacteria – breaks down. That muck feeds the algae blooms, which create more muck. It’s a vicious cycle that can be remedied with aeration.

Do any of these ring true? If so, your waterfall or stream is not providing enough aeration for your pond. One of our aeration systems can help. The Airmax® KoiAir™ Water Garden Aeration Kit is designed for medium and large water gardens and koi ponds that are up to 16,000 gallons. The Airmax® PondAir™ Water Garden Aeration Kit is designed for smaller water gardens up to 2,000 gallons. Both whisper-quiet systems can be run 24 hours a day, seven days a week, providing your finned pals and beneficial bacteria plenty of oxygen and water movement.

Pond Talk: When did you know it was time to upgrade your pond’s aeration system?

Breathe Life Into Your Water Garden - Airmax(r) KoiAir(t) Water Garden Aeration Kit

Why are water changes important? | Decorative Ponds & Water Gardens Q & A

Q: Why are water changes important?

Q: Why are water changes important?

Shirley – Warr Acres, OK

A: It’s nice to open a window on a warm spring day and let the fresh air flow through your house, right? Well, a partial or complete water change in your koi pond or water garden is the same thing: It freshens your finned pals’ environment, making them happy and healthy.

Here are five reasons why water changes are so important to your fish, plants and other aquatic life:

  1. Nutrient Removal: Muck and debris buildup happens in just about every water feature. A water change manually removes any excess nutrients and chemicals like nitrates, phosphates and ammonia that can be harmful to fish and other underwater critters.
  2. Healthy Fish: Fresh, clean water means improved water quality, which ultimately promotes your fishes’ health. Just as you need oxygen to thrive, your fish need clean water to thrive. Their well being is directly related to the liquid environment in which they live.
  3. Algae Control: Pea soup and string algae feed on all that decomposing waste, which they use as fertilizer. By removing those excess nutrients in the water column with a water change, you can discourage the growth of algae.
  4. Fights Foam: Foam forms when excess organic material has accumulated in your water garden. 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. A water change will quickly reduce that foamy buildup.
  5. Clears Water, Stabilizes pH: A water change will also improve the appearance of cloudy water and maintain pH levels, resulting in a pristine pond filled with healthy fish, lush greenery and clean water.

To keep stress levels down among your fish, we recommend doing partial water changes as soon as water temperatures reach 50° F. In addition, be sure to add some Stress Reducer PLUS and LiquidClear™ to your water. The Stress Reducer PLUS forms a beneficial slime coat on your fish and makes tap water safe for them. The LiquidClear’s™ beneficial bacteria helps to digest dead organics in the water, making it crystal clear.

Pond Talk: How often do you do water changes in your koi pond or water garden?

Builds Protective Slime Coating - Pond Logic (r) Stress Reducer PLUS

Why does my water garden turn green and can I prevent it? | Decorative Ponds & Water Gardens Q & A

Q: Why does my water garden turn green and can I prevent it?

Q: Why does my water garden turn green and can I prevent it?

Laurie- Bardstown, KY

A: Green water in fish ponds and water features are a common conundrum faced by hobbyists. What causes it, and how can it be fixed?

Algae Explosion
Green water is the result of an imbalance in your pond’s ecosystem. When too many nutrients – also known as decomposing plant material, fish waste and other debris – build up in your water garden, algae flourish because the nutrients act like fertilizer to those tiny plants. That thriving planktonic algae is what causes your water to resemble pea soup.

Finding Balance:
To achieve balance in your pond, you need to evaluate and correct the underlying problems that are causing your green water. Here’s a guide that can help you identify the problem and work toward a solution:

  • Problem: Too many fish.
    Solution: If your water garden is brimming with fish, it may be time to relocate some of them. Overcrowding is a common source for green water because your filtration system may not be large enough to handle the amount of waste being produced. A simple rule of thumb to ensure room for your fish is one fish (5 inches long) for every 10 square feet of surface area.
  • Problem: debris buildup.
    Solution: After a long winter, waste and debris may have built up in your pond. A good spring cleanout will remove those excess nutrients that are feeding the algae. Here’s an easy step-by-step spring cleaning guide to follow that will help you through the process.
  • Problem: Inadequate mechanical filtration.
    Solution: Mechanical filtration helps to remove the excess nutrients from the water column. As the water passes through the filtration system, debris is removed and collected in the filter box or skimmer. Check to be sure your filtration system is adequate for your pond’s size and fish population. If it’s not, consider giving it a boost.
  • Problem: Lack of beneficial bacteria.
    Solution: Beneficial bacteria, like those found in DefensePAC®, are microorganisms that eat through detritus and other algae-feeding nutrients. With little or no nutrients to feed the algae, the green stuff will eventually die off. Learn more about DefensePAC’s components and how to use them here.
  • Problem: Inadequate aeration.
    Solution: Those beneficial bacteria – as well as your pond’s fish – need life-giving oxygen to thrive, and that’s where aeration comes into play. Air being pumped into the water via a diffuser or air stone will circulate the water column and infuse the water with oxygen. Learn more about the importance of aeration here.
  • Problem: Too much sunlight and not enough plants.
    Solution: Because algae are plants, sunlight is essential for growth. You can block that sunlight by covering your water’s surface with floating plants. We recommend shading 40 to 60 percent of your pond with water lilies or other floating plants.

Going Ultraviolet
Once you’ve cleaned out your pond, checked your filtration and aeration systems, added some beneficial bacteria, adjusted your fish load and added some plants, you should be well on your way to clearing up that pesky algae. A final remedy to try is an ultraviolet clarifier, like The Pond Guy’s® PowerUV™ Clarifier. It’s designed to clear water. As a result, the tiny particles of debris clump together and are removed by your mechanical filtration system.

Good luck keeping that green water at bay!

Pond Talk: What do you do to clear up algae in your koi pond or water garden?

Eliminate Discolored Water - Pond Logic (r) PowerUV (t)

How often should I be changing my UV bulb? | Decorative Ponds & Water Gardens Q & A

Q: How often should I be changing my UV bulb?

Q: How often should I be changing my UV bulb?

Deborah – Providence Forge, VA

A: Your UV bulb is an important component of your pond’s filtration system. The bulb’s ultraviolet rays destroy the ultra-fine planktonic algae that cause green water by destroying the plant’s cellular walls. The tiny dead algae particles are then removed by your mechanical filtration system, leaving behind clean, clear water.

UV Ready

For maximum effectiveness, you should change your UV bulb at least once a year, such as when you perform your pond’s annual spring cleanout. If you’ve recently changed your bulb and your water is still turning pea soup green, you might need to simply clean off debris that has built up on the bulb itself.

Whether you have a standalone UV clarifier, like the PowerUV™ or one that’s part of a filtration system, like our ClearSolution™, use a soft cloth when cleaning or changing the bulb rather than using your bare hands. The oils on your skin can actually shorten the lifespan of your bulb.

Unfortunately, a UV clarifier does not affect string algae at all, so you’ll need to use AlgaeOff® or AlgaeFix® to rid your pond of it. But if your pond turns green from planktonic algae every year from full sun exposure or too many fish, a UV clarifier is an excellent solution.

Preventing Algae Growth

Though UV bulbs do a great job with green water, an even better solution is to prevent algae growth in the first place. Planktonic algae flourishes in ponds that have nutrient-rich water—meaning water that has lots of fish waste, leftover fish food, decomposing plant material and even fertilizer from your lawn.

You can tamp that green growth down by reducing the number of fish in your pond, minimizing the amount of food you feed them and cleaning up the waste they produce, as well as regularly removing the built-up detritus.

Consider using the Pond Logic® DefensePAC®, which uses beneficial bacteria to improve water quality throughout your water column, eliminate muck and built-up debris, and enhance fish health. With quick and easy application, you’ll see noticeable results in no time.

Pond Talk: Besides using a UV bulb, what do you do to reduce or eliminate planktonic algae in your pond?

Replace Your UV Bulb Yearly - Replacement UV Bulbs

Now that it’s spring, when do I start using my DefensePAC? | Decorative Ponds & Water Gardens Q & A

Q: Now that it’s spring, when do I start using my DefensePAC(r)?

Q: Now that it’s spring, when do I start using my DefensePAC®?

Jan – Avoca, NY

A: Containing everything you need to jump start your backyard pond or water garden in the spring, your DefensePAC®” package can be cracked open as soon as the ice melts and water temperatures are consistently above 40°F.

The first products in the pack you’ll use are Oxy-Lift™ Defense® and Seasonal Defense®. They’re perfect for cleaning out your pond and prepping it for spring.

  • Oxy-Lift™ Defense® lifts debris from waterfalls, streams, rocks and anywhere else muck collects in your pond. Simply shut down your waterfall and/or streams, sprinkle on the affected areas and watch the foam get to work breaking down that unsightly buildup. Use Oxy-Lift™ Defense® only when needed.
  • Seasonal Defense® contains hungry beneficial bacteria that will immediately get busy gobbling through leaves, scum and settlement that have collected over the winter. Spring applications should begin at pond startup or just after ice melts. Use Seasonal Defense® once a week for four weeks in the spring.

The other ingredients in DefensePAC®—including Nature’s Defense®, Clarity Defense® and Muck Defense®—all work to promote a healthy ecosystem, clean and clear the water column, and break down organics in your pond. They can be used on a routine basis throughout the spring and summer.

  • Nature’s Defense® contains natural bacteria that breaks down organics in your water garden. These organics, if left alone, are a food resource for algae—which is not something you want to feed. Because it works best when temperatures are above 50°F, check you water’s temperature with a Floating Pond Thermometer before dosing. Use Nature’s Defense® every two weeks throughout the season.
  • Clarity Defense® is designed to clarify ponds. It locks up excess nutrients, making them unavailable as a food source for algae, and settles suspended particulates that are in the water column. It also stimulates natural bacteria growth and buffers pH levels.
  • Muck Defense® also contains natural bacteria that accelerate the decomposition of organic matter caused by rotting leaves, algae and fish waste. This is great for water gardens that were constructed with rocks and gravel that are difficult to vacuum. We suggest using Muck Defense® every four weeks throughout the season when water temperatures are above 50°F.

DefensePAC® is a five-step solution to cleaning and clearing your pond—and keeping it that way all season long.

Pond Talk: What kinds of changes are you planning to make to your water garden this spring?

Debris Lifts Away in Seconds - Pond Logic (r) Oxy-Lift™ Defense®

How do I know if my filtration system is adequate for my pond? | Decorative Ponds & Water Gardens Q & A

Q: How do I know if my filtration system is adequate for my pond?

Q: How do I know if my filtration system is adequate for my pond?

Roger – Grayson, GA

A: Clean, clear water is a must-have in any water feature. It allows you to see those gorgeous koi and goldfish swimming below the surface. It shows that you have excellent water quality, with plenty of oxygen for your pond’s inhabitants—including the microscopic ones, like beneficial bacteria. And it puts off no offensive odors, which means you can host shindigs by your water garden without scaring off your friends.

When your water quality is suffering, your pond is telling you that your filtration isn’t up to par. Here are four clear signs that say you need to kick it up a notch.

  1. Algae Blooms, Clarity Concerns: If you have a filtration system in place but you still have water clarity issues and algae blooms, that’s an obvious indicator that you need an upgrade. When selecting a more powerful filtration system, like our AllClear™ PLUS Pressurized Filters with a built-in ultraviolet clarifier, make sure it’s sized appropriately for your pond and its nutrient load.
  2. Fish Frenzy: If your pond’s resident fish have multiplied and grown over the years, then you’re likely overdue for a more powerful filter system. Most filter systems are marketed for a minimal fish load, so too many fish producing waste will overload the system. Remember: The rule is to allow 1 inch of adult fish per square foot of surface area. If you have too many koi or goldfish in your pond, you should think about finding new homes for some of your finned friends or increasing your filtration.
  3. Toxic Test Results: Test your pond’s water with one of our Master Test Kits to find out what your ammonia, nitrite and phosphate levels are. If you see high ammonia levels or if your fishes’ health has been suffering, the pond lacks proper filtration.
  4. Foamy Falls: Have you seen foam build up at the base of your waterfall or stream? All that frothiness, which is caused by excess protein and oil excreted by fish and other pond dwellers, can be a sign of excessive nutrient levels caused by inadequate filtration. A higher-powered filter system can help remove and dissipate that foam.

If you have a waterfall filter box, you can easily boost your filtration system’s water-cleaning power by adding Matala® Filter Pads. With four different densities—low, medium, high and super high—you can mix and match them to suit your pond’s unique needs.

Pond Talk: What telltale sign told you that it was time to increase your filtration system?

3 Types of Filtration, 1 Powerful Unit - Pond Logic (r) AllClear(t) PLUS Pressurized Filters

Will the snails I added last year still be in my pond? | Decorative Ponds & Water Gardens Q & A

Q: Will the snails I added last year still be in my pond?

Q: Will the snails I added last year still be in my pond?

Phoebe – Amherst, NH

A: Snails are a pond keeper’s best friend – especially when it comes to gobbling through algae.

The type that you probably have in your backyard water garden is the Japanese Trapdoor Snail. They get their name from their fancy shells, which have a hinged fingernail-like plate that allows them to seal the shell’s opening, providing protection from drought and predators.

Cold-Weather Friendly
These little guys are hardy enough to weather cold temperatures, like the ones we had all winter. Unlike other aquatic snails, Japanese Trapdoor Snails lack a lung, which means they don’t need to surface to suck in frigid (and potentially deadly) oxygen in the winter. They’re ideal for harsher northern climates.

Hiding Places
When the spring and summer sunshine warms the water, you might not see your snails. They like to hang out on the bottom of ponds, and they blend in incredibly well with rocks, gravel and plants. But they’re hard at work doing what they do best – eating algae and the detritus that feeds it. They also do a great job grooming plants and keeping your rocks and plant pots algae-free.

Strength in Numbers
For maximum algae-eating benefit, we recommend housing a minimum of 10 snails per 50 square feet of pond. If you have a farm pond or larger water feature, you’ll need at least 200 snails to have any effect at all. Remember that they will reproduce a few times a year, and tiny newborn snails are hungry!

Aerated Water, Happy Snails: Keep those helpful gastropods happy all year-long by providing plenty of oxygen-rich water. The best way to do that is by aerating your pond with a subsurface aeration system, like the PondAir™ Aeration Kit. Featuring two air stones and flexible black vinyl air tubing, an adjustable unit like this will infuse your pond with oxygen while remaining whisper quiet.

Pond Talk: Have you had success controlling algae in your water feature with snails?

Breathe Life Into Your Pond - Pond Logic (r) PondAir(t) Aeration Kits

Should I add a pressurized filter to my water garden? | Decorative Ponds & Water Gardens Q & A

Q: Should I add a pressurized filter to my water garden?

Q: Should I add a pressurized filter to my water garden?

Sherri – Hilliard, FL

A: Whether you have an existing pond or are building a new one, just about any pond can benefit from a pressurized filter.

Able to be positioned anywhere outside your pond, these units hold water pressure so filtered water can be routed back to the pond or up to a waterfall. This allows you to create a flowing waterfall effect without taking space at the top of the falls.

But that’s not all. Here are some more reasons to add an AllClear™ PLUS Pressurized UV Filter to your water feature:

  • Remove Excess Fish Waste: Are your koi and goldfish getting bigger and adding to the waste load in your pond? Instead of parting with a few of your finned pals, just add another filter! It will help to reduce the added waste from the growing fish and allow you to keep them part of the family.
  • The Backflush Feature: Water changes can be a pain. Pulling out a pump and routing water out of the pond for your regular water changes take time and effort. But with the backflush feature on the AllClear models, the hard work is a snap! You simply turn a dial, and waste water and debris are rinsed from your filter via a discharge outlet.
  • Green Water Abated: In addition to featuring mechanical and biological filtration, the AllClear filters include an ultraviolet light, which destroys algae and clears up green water. If you experience algae blooms throughout the pond season, a UV light will help.

With some things in life, too much isn’t always a good thing—but that’s not the case with filtration. As long as you’re not filtering out your beneficial bacteria, more filtration will only make your water clearer and pond healthier.

PRO TIP: If temperatures dip below freezing where you live, the AllClear PLUS will need to be removed for the winter and stored in a frost-free area.

Pond Talk: How has your pond benefitted from a pressurized filter?

Three Types of Filtration, One Powerful Unit - View The Pond Guy® AllClear™ PLUS & SolidFlo™ Combo Kits

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