How do I keep koi healthy?

Observe fish during feeding to catch ulcers or injuries early, maintain clean and well‑aerated water, and deter predators with pond netting or motion devices.

What’s the best way to increase oxygen in my pond?

Waterfalls add natural aeration. For calm ponds, add an aerator to create bubbling and boost dissolved oxygen.

How can I protect koi from herons and other predators?

Use pond netting for reliable protection. Pair with visual or motion‑based deterrents to discourage birds and small mammals.

3 Simple Ways to Keep Your Koi Fish Healthy

At Hoaglandscape, we know your pond isn’t just water—it’s a living ecosystem. If you keep koi, you want them to thrive, not just survive. The good news? A little daily attention goes a long way. Here are three proven ways to keep your koi healthy and your pond in balance.

1. Watch Your Koi During Feeding

The simplest way to protect your koi is to observe them closely while they eat. Feeding time doubles as health inspection time.

Look for:

Ulcers, spots, or small injuries
Behavioral changes (a fish hanging back instead of eating)
Signs of predator encounters

Catching problems early makes treatment far more effective.

2. Maintain a Clean, Well-Aerated Pond

Healthy koi need healthy water. A clean pond with good circulation prevents stress and disease.

Waterfalls naturally increase oxygen in moving water.
In calmer ponds, an aerator can create bubbles that improve oxygen levels.

At Hoaglandscape, our pond builds and upgrades always account for circulation and oxygen needs, because koi thrive in a well-balanced environment.

3. Protect Your Fish From Predators

Predators like herons, raccoons, or even neighborhood cats can devastate a pond.

Pond netting is one of the most effective (if not prettiest) solutions.
Some pond owners also use motion deterrents or floating scare devices to discourage predators.

When we design ponds, we can incorporate predator-prevention strategies that protect your koi without taking away from the beauty of the water feature.

Our Trusted Koi Care Products

Even with great care, koi sometimes need treatments. For bacterial infections, parasites, and other health concerns, we recommend Aquascape products—a trusted leader in the pond and water feature industry.

👉 Explore Aquascape’s fish care treatments or contact Hoaglandscape for recommendations specific to your pond.

Conclusion

Taking care of koi doesn’t need to be complicated. Watch your fish daily, maintain a clean and oxygen-rich pond, and protect them from predators. With these three steps—and the right pond design—you’ll enjoy healthy, thriving koi for years to come.

📞 Ready to improve your koi pond? Contact Hoaglandscape to schedule pond maintenance, upgrades, or a custom water feature consultation.

Author Bio

Written by Brian Hoagland, owner of Hoaglandscape. Brian specializes in designing, building, and maintaining custom ponds and water features for homeowners who want their landscapes to come alive.