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What is the optimum water temperature for my pond, and when should I worry that it’s too hot? | Decorative Ponds & Water Gardens Q & A

Q: What is the optimum water temperature for my pond, and when should I worry that it’s too hot?

Q: What is the optimum water temperature for my pond, and when should I worry that it’s too hot?

Gayle – Syracuse, NY

A: “Room temperature” isn’t just for humans. Fish and pond critters prefer particular underwater temperatures, too. In fact, and a high-temp living environment can even affect their health and well-being. Warm water holds less oxygen than cool water, so they’ll be literally gasping for breath if it gets too hot.

As the air temperature heats up this summer, the water temperature in your pond will increase, too, so it’s critical to keep an eye on it as the mercury rises. Use your Floating Pond Thermometer to test the waters. The best water temperature for your aquatic pals is between 68° and 74° Fahrenheit (pretty close to an ideal air temperature for humans).

If your thermometer tops 85°F, you’ll need to cool your water. Here’s what we recommend:

  • Add Aeration:Make sure you have your aeration system, like the Pond Logic® PondAir™ or KoiAir™ Aeration System, up and running. It’s like an underwater fan for your koi and goldfish. The moving, bubbling water is cooler and loaded with oxygen, making it easier for your fish to breathe.
  • Add Plants: Just as you seek out shady spots to shield yourself from the sun’s rays, fish will do the same to keep themselves cool. Make sure that about 60 percent of your pond’s surface is covered with floating plants, water lilies and other types of shade cover for your pond pets.
  • Add Water: Warmer temperatures mean increased evaporation rates, so make sure you top off your pond during hot weather. Doing so isn’t a substitute for a water change, but it will cool off the water and ensure your finned friends have enough wet stuff in their pond.

One last tip: Do not feed your fish when water temperatures are above 85°F. They probably won’t be hungry. And besides, the uneaten food will just ruin your water quality.

Pond Talk: What’s the hottest temperature you’ve recorded in your water garden?

Breathe Life Into Your Pond - Pond Logic(r) PondAir(tm) Aeration Kit

Is There Anything I Can Do To Keep My Koi Safe From The Heat? | Decorative Ponds & Water Gardens Q & A

Is there anything I can do to keep my koi safe from the heat?

Q: Is there anything I can do to keep my koi safe from the heat?

Shalini – Brinkley, AR

A: Baby, it certainly is hot outside! As the temperatures rise, you might think the coolest place to be is in the pond with your fish. Surprisingly, however, pond fish can feel the heat, too. The warm water feels “stuffy” to them because it contains less oxygen than cooler water. Check out these four tips for keeping your koi and goldfish cool as finned cucumbers.

1. Check your Water Temperature: Ideally, your pond’s water temperature should be at a comfortable 70 degrees Fahrenheit or less. Use the Pond Logic® Floating Pond Thermometer to check the pond’s temp, and if it’s too warm, do a partial water change to give the fish some fresh, cool water.

2. Top Off the Pond: Even if your pond’s water temperature is hovering near that 70 degree zone, it’s a good idea to keep an eye on your pond’s water level and add more when needed. When the mercury rises, remember that your water will evaporate more quickly into the atmosphere.

3. Create Shady Spots: Just as you seek out shady spots to shield yourself from the sun’s rays, fish will do the same to keep themselves cool – and prevent themselves from getting sunburned! Be sure to provide floating plants, water lilies and other types of shade cover for your pond pets. Have fun with it! Add some tropical lilies like the Panama Pacific, tropical bog plants like the Red Canna or other hot-weather plants that prefer the warmer weather.

4. Provide Aeration: Do you like sitting by the fan or swamp cooler during heat waves like this one? Well, an underwater bubbler or aeration system, such as the Pond Logic® PondAir™ Aeration System, is like a fan to fish. The cooler water that’s loaded with oxygen is easier for the fish to breathe.

While the heat waves persist this summer, follow these tips to ensure your fish stay cool and comfortable in their watery home. They’ll thank you for it!

Pond Talk: Where is your favorite place to chill out when the temperature soars?

Pond Logic PondAir - Protect Your Prized Fish

How Can I Keep My Pond & Fish Healthy With All Of This Hot Weather? | Ponds & Lakes Q&A

Q: How can I keep my pond & fish healthy with all of this hot weather?

Cheryl – Cheshire, OH

A: If you’re feeling the heat, there’s a good chance the game fish in your pond are feeling it, too. Not only will they sense the temperature increase in the water, but they’ll also be affected by a decreased amount of dissolved oxygen in their environment.

So what can you do to keep the fish in your lake or pond cool and comfortable? Check out these four expert-recommended tips:

1. Provide a Cool Habitat: Like humans and other land-dwellers, fish like a place to hide to get out of the sun. They’ll slip under the shade of plants, swim inside logs and take advantage of spots like the Porcupine Fish Attractor Spheres, which encourage plant growth and give them a place to feel safe, shaded and protected.

2. Keep the Water Moving: When the water moves and circulates with an aeration system like an Airmax® Shallow Water Aeration System or an above-surface fountain like a Kasco Decorative Fountain, it allows for greater gas exchange at the water’s surface, expelling dangerous ammonia and taking in healthy oxygen. This provides more “breathable” space for your fish to swim deeper in the pond – where it’s cooler.

3. Rake Out Dead Debris: To cut back on the dangerous gasses being produced in your lake or pond, remove dead debris and decomposing plant matter with a pond cutter and rake, like the Pond Logic® Pond Rake & Weed Cutter Combo. Less debris in your lake means less gas is being produced.

4. Be Cautious of Water Treatments: Dead or dying organic materials can reduce oxygen levels quickly, so be cautious when using algaecides or herbicides to treat algae and other weeds. Rather than dosing your entire pond or lake, treat one section at a time, waiting a week or two before treating another area. This allows the fish to remain in the unaffected areas.

With a little planning and a some regular maintenance, you can keep your recreational pond or lake healthy no matter the temperatures. Your fish will thank you for it!

Pond Talk: What do you do to keep cool during these scorching heat waves?

Kasco Fountains - Add Tranquility To Your Pond

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