How I Built My Dream Pond After a Brutal Canadian Winter

By Alex, Toronto, Canada

I’ve been a long-time fan of the Ozponds channel, and your videos inspired me to build my own pond.

My wife and I moved from a condo into a house in late summer 2025, and by early spring 2026 I was already planning the build. We had a particularly brutal winter in Toronto this year. Temperatures regularly dropped to -25°C, the sun was setting before 4 pm, and the snow was sometimes waist deep and never seemed to melt.

Honestly, what kept me sane through the worst of it was knowing that spring would eventually arrive and I’d finally be able to build my pond.

Starting with the Bog Filter

One of the first tools I used was the Ozponds Bog Filter Calculator.

I’d seen one of Kev’s polls asking people about their biggest pond regrets, and one answer came up over and over again: “I wish I’d built it bigger.”

So I decided to make my pond as large as I reasonably could while still building a bog filter big enough to cope with the fish I wanted to keep.

The finished pond measures approximately 12 feet long, 6 feet wide and 2 feet deep, with a 150-gallon stock tank bog filter.

My plan is to keep plenty of fish and eventually add a turtle, so I wanted to build enough filtration right from the start instead of wishing I’d made it larger later.

For the plumbing, water is pumped from a skimmer section into the bottom of the bog filter. I used a bucket for the sump-pump clean-out access and attached it to another bucket cut in half and drilled with holes to evenly disperse the water through the gravel.

Digging Day

Once the EPDM liner and underlay arrived, my family helped me dig the pond.

With a few extra hands, we managed to excavate the entire pond in a single day. After that, there was no rush. The project became about slowly turning a hole in the ground into something beautiful.

Keeping Costs Down

Like many DIY pond builders, I looked for ways to save money wherever I could.

Much of the flagstone came from nearby ravines, while most of the river rock was picked up for free through Facebook Marketplace. The larger feature rocks were purchased from a local landscaping supplier.

I really enjoyed hunting down materials almost as much as building the pond itself.

Bringing the Pond to Life

We’ve gradually been adding plants over the last few months, including:

• Water lilies
• Water hyacinth
• Water lettuce
• Cattails
• Various bog grasses

My wife has especially enjoyed planting a wildflower garden around the pond, which has really helped soften the edges and make everything feel like it’s been there for years.

The pond is already home to:

• Rosy Red Minnows
• Sarasa Comet Goldfish
• Crayfish
• Water Striders
• Plenty of interesting aquatic insects I find while hiking

One of the biggest surprises has been the number of dragonflies that now spend their days around the pond. Watching wildlife discover the pond has been incredibly rewarding.

Our next goal is to eventually add a turtle.

Thanks, Kev!

I just want to thank Kev for all the resources, videos and calculators.

They made the entire process so much easier and removed so much of the guesswork from planning the pond.

Believe it or not, watching Ozponds videos throughout that long Canadian winter helped me stay motivated while I waited for spring to finally arrive.

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A Note from Kev

I really enjoyed reading Alex’s story because it highlights something we hear all the time—planning pays off.

Instead of rushing into the build, Alex spent months thinking about the design, used the bog filter calculator to size his filtration properly, and built the largest pond his space would comfortably allow. That’s exactly the sort of decision many pond owners wish they’d made the first time around.

I also love how resourceful this project was. Free rocks, DIY solutions, family helping with the digging, and now the pond is already attracting dragonflies and other wildlife. That’s what a healthy ecosystem pond is all about.

Fantastic work, Alex, and thank you for sharing your journey with the Ozponds community.

If you’ve built a pond and would like to share it with the world click here.

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