• Archives

  • Categories

  • Pages

I top off my pond for evaporation, so why do I need to do water changes? | Decorative Ponds & Water Gardens Q & A

Q: I top off my pond for evaporation, so why do I need to do water changes?

Q: I top off my pond for evaporation, so why do I need to do water changes?

Joan – Bethesda, MD

A: Topping off your pond with fresh water isn’t quite the same thing as a water change. Think of it like the oil in your car: You may “top it off” when the lubricant gets low, but to keep your motor humming, you need to do a complete oil change every 3,000 miles or so to remove the dirty oil that’s full of sludge and combustion by-products.

It’s the same idea with the water in your pond.

Adding water every week or so to replenish any lost from evaporation is certainly important—but it does nothing to remove the sludge, or algae-feeding nutrients, in your pond. As the water evaporates, the gunk stays behind and concentrates. Your filter does a good job removing the pollutants, but unfortunately it’s not always enough.

So why do water changes?

  • Remove the buildup of nutrients, like nitrates and phosphates
  • Promote fish health, as their well-being is directly related to your water quality
  • Reduce algae blooms

To keep buildup under control, we recommend you change 10 percent of your water every week, or 20 percent of your water every two weeks. Many pond owners use a spare pump and hose to draw out the dirty water and send it down the drain. If you have a pressure filter, using its back flush feature is the perfect way to make the water change.

If your tap water has chlorine or other heavy metals, don’t forget to make it safe with Pond Logic® Water Conditioner. It removes chlorine, destroys chloramines and detoxifies heavy metals. One ounce treats 500 gallons.

In addition, make sure you add some beneficial bacteria to the mix, like Pond Logic® Nature’s Defense® or LiquidClear™, because when you change the water, some good stuff goes out with the bad! Both products contain microorganisms that instantly activate once they hit the water, multiplying every 20 to 40 minutes as they digest organics in your pond.

Make water changes a regular part of your pond-maintenance routine.

Pond Talk: What water-change routine has worked well in your water garden or koi pond?

Neutralize Harmful Water Contaminates - Pond Logic(r) Water Conditioner

When can I start treating my shoreline for new cattail growth? | Ponds & Lakes Q&A

Q: When can I start treating my shoreline for new cattail growth?

Q: When can I start treating my shoreline for new cattail growth?

Charlie – Bottineau, ND

A: When the wall of cattails comes between you and your recreational pond or lake, it’s time to retake control of your shoreline! Once the cattails are 18 inches above the water’s surface, you can start treating the new growth.

Here’s how we recommend managing cattails:

Set Boundaries

Not all cattails are bad. They provide a habitat for wildlife, like amphibians, insects, birds and fish. Their below-the-ground rhizomes stop soil erosion. And their green strap-like foliage, which stands 3 to 10 feet tall, adds beachfront privacy. So rather than totally eradicate cattails from your pond or lake, set boundaries for them and treat them when they stray.

Chemical Control

The most common way to control cattails is to apply an EPA-registered herbicide like Shoreline Defense® with a pressurized pond sprayer to the foliage of actively growing plants. The product is absorbed by the weed, ultimately killing it all the way down to its roots. It’s a perfect solution for beaches, shorelines or anywhere emergent weeds grow.

Physical Removal

Once the herbicide has had a chance to fully soak into the cattail’s root system, the plant will turn brown and become limp. At this point, you should remove the stalks. Why? Those dead cattails and decomposing foliage will turn into muck—which will act as a fertilizer for next season’s cattails. Cut the stalks using the Pond Rake and Cutter Combo or the Jenlis WeedRazer® Pro at the base of the plants, allowing for easier removal with your rake.

Stay in Control

Cattails have extensive root systems, and so staying on top of their growth is key to preventing them from turning into a cattail wall—and taking over your shoreline!

Pond Talk: What critters live in your stand of cattails?

Kill Cattails To Their Roots - Pond Logic® Shoreline Defense® & Treatment Booster™ PLU

Follow

Get every new post delivered to your Inbox.

Join 143 other followers