Want to give your backyard a makeover? Consider adding a koi pond to it. A koi pond can improve the aesthetic appeal of your property and help create a relaxing backyard. Spending some time in a garden with a koi pond is a great way to control blood pressure, reduce stress and anxiety, and boost mental health.

Avoid these koi pond building and maintenance mistakes to keep your koi pond looking great and koi healthy all year round.

Building Your Pond Too Shallow

Koi ponds should be no shallower than two feet. The temperature of a koi pond that is too shallow may fluctuate wildly in winter and summer. Temperature fluctuations could negatively impact fish health and promote algae growth in summer. Koi fish need 10 gallons of water every inch of their length. So, a 12-inch koi needs 120 gallons of water. If you have 5 12-inch koi, your pond should have at least 600 gallons of water.

In a shallow pond, koi may have difficulty regulating their body temperature. Because sunlight reaches the bottom of a shallow pond, algal blooms are more likely to occur in them. Not only is algae unsightly, but it can also affect pond water quality and compete with your koi for nutrients. Make sure your koi pond is at least 36” deep so your koi has ample space to hide when predators like raccoons and herons attack.

Failing to Ensure Your Koi Have Enough Oxygen

High temperatures can have a profound effect on koi health. Given that warm water holds less dissolved oxygen than cold water, dissolved oxygen concentration in your pond can drastically fall in summer, and your koi may have trouble breathing. Algal blooms can also cause dissolved oxygen levels in water to drop.

To maintain normal dissolved oxygen levels, add a waterfall to your pond. A waterfall moves pond water to increase the number of oxygen particles dissolved in it. Alternatively, install a pond air pump. As the name suggests, pond air pumps pump air into pond water to increase dissolved oxygen levels.

If you are having difficulty choosing the right air pump or waterfall for your pond, contact a koi pond company near you in Randolph for help.

Adding Chlorinated Water to Your Pond Without Neutralizing It

Chlorine can damage the gills and skin of your koi fish. When refilling your koi pond, remember to add a chlorine/chloramine neutralizer. Use a water shut-off valve to ensure your tap does not run too long.

Rarely Changing Pond Water

Contaminated water can affect fish growth and health. Fish release pheromones to communicate with each other. These chemicals can build up in your pond and negatively affect koi health. To prevent these problems, change 10-20 percent of pond water every week.

Atlantis Water Gardens is a renowned pond builder in Randolph. Our professionals have years of hands-on experience building different types of ponds. To learn more, call 973-627-0515.




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Adding a koi pond to your landscape is a great way to give it a makeover. A koi pond can improve the mood in your garden transforming it into an oasis. Spending some time near a Koi Pond is a proven way to unwind and relax after a busy day.

Once you are ready to go ahead with your Koi Pond construction project in Short Hills, follow these steps to build the koi pond of your dreams.

Choose the Location

When it comes to koi pond construction, location matters. A hidden or inaccessible koi pond fails to serve its purpose. Choose an accessible location that is visible from your home. Make sure the view of your pond is unobstructed. Your koi pond should blend perfectly into the surroundings.

Shade is good for your plants and fish but placing your pond in shade can result in leaves, branches and twigs falling into it. Debris can sink to the middle or bottom of your pond and decay, releasing harmful gases that can affect water quality.

Before finalizing a location, mark out the spot where you are going to put your pond with spray paint and view it from different angles to determine if your pond will fit in with the surroundings.

Determine How Deep Your Pond Should Be

The average koi pond is 24 feet long by 12 feet wide and is 4 feet deep. It can house 10 24-inch koi or 20 12-inch koi. If you plan to keep more koi, you will need a bigger pond. When determining how deep and large your pond should be, consider the fact that your koi will grow with time.

Choose Your Filtration System

A pond’s filtration system helps keep the water clean. Clean water ensures good koi health. A pond filtration system has four components: the bottom drain, settling chambers, mechanical filtration and biological filtration.

The bottom drain helps control pond muck build up, settling chambers store heavy solids, mechanical filtration filters out the debris and biological filtration provides a place for beneficial bacteria to thrive.

Get to Work

The final step involves installing your pond. Follow these steps to install your pond:

➢ Dig your pond out

➢ Place your koi pond equipment

➢ Lay down the liner. Use 45 mil EPDM liner

➢ Place rocks and gravel at the bottom of your koi pond

➢ Add underwater LED lights, aerators or autofill line to your pond

➢ Fill in your pond with water

➢ Clean the area

Atlantis Water Gardens is a leading pond builder serving Short Hills and beyond. We have years of experience transforming boring and dull gardens into extraordinary spaces with magical ponds. To learn more, call us at 973.627.0515.

Take The Plunge!

Schedule a phone call and get to pick the brain of one of our experienced designers about your project Schedule My Call Now

Lovin’ It? Want more pics?

We got em. 🙂 Here’s some pretty photos you can look at to destress.