Inspired by the peaceful sound of a nearby stream, my mom wanted to recreate that same calming feeling in her backyard—and with a little creativity, we made a stunning DIY outdoor garden fountain that looks high-end but cost us less than $125.
Several times a week during the summer, my mom hikes along a quiet stream near her home.
Being out in nature and hearing the gentle sound of flowing water clears her mind and renews her spirit.
She dreamed of bringing that same peaceful feeling into her own backyard—and this DIY garden fountain does exactly that.
Inspired by the vintage water trough fountains she’s seen online (with price tags over $3,000!), we set out to create our own version for a fraction of the cost.
And we did it—for under $125!
It’s a simple, budget-friendly project that doesn’t require a lot of tools, and it’s become one of the best upgrades we’ve made to her backyard.
Scroll down to see our step-by-step process and learn how you can build your own peaceful backyard fountain on a budget.
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The Look We Loved But Not the Price Tag
Our inspiration came from a breathtaking garden fountain we saw at Olive Ateliers.
A home goods store that’s known for its one-of-a-kind vintage and antique pieces sourced from over 10 countries, including Indonesia, France, Turkey, and China.
Each item is full of character, patina, and history—and we completely fell in love with their stunning outdoor garden fountains made from old water troughs.
The aged stone, the worn textures, the sense of story behind each piece—it was everything we wanted.
But when we saw the price tag—$2,500 for the trough, plus another $645 to convert it into a working fountain—we knew it wasn’t in the cards.
We definitely have champagne taste on a beer budget, so we got creative and figured out how to recreate that same rustic, timeworn charm for under $125.
DIY Garden Fountain Supplies
To create our faux limestone trough fountain, we started with an unexpected base—a styrofoam cooler!
It was lightweight, and the perfect size for our garden space.
Here’s a list of the supplies we used to create a faux limestone garden fountain:
- styrofoam cooler (we found ours at Walmart Neighborhood Market)
- concrete patch (we used 3 1/2 ten pound buckets
- 1 1/2″ piece of PVC pipe (we had a scrap in our garage)
- exterior paint Behr Sculptor Clay, Peppery & pure white
- Flex Seal clear
- silicone caulk
- pond pump (264 GPH for the lift we needed – Harbor Freight)
- copper pipe
- copper elbow (we used 2)
- copper T (we used 2)
- nitrile gloves
And we used the following tools:
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How We Built a Faux Limestone Garden Fountain
Let’s get started on creating your own stunning faux limestone trough garden fountain!
With a few simple materials, and some hands-on fun, you can create a realistic, beautiful, budget-friendly fountain that looks like aged stone.
Ready to bring the peaceful sound of flowing water to your backyard?
Let’s dive in!
1: Prep Styrofoam Cooler
Before applying any concrete, you’ll first need to drill a 1¼” hole in the back side of the cooler for the pump’s electrical cord.
We used a 1¼” wood bit and were careful to apply gentle, even pressure while drilling to avoid damaging the styrofoam.
Once the hole was drilled, we cut a 1″ PVC pipe to match the thickness of the cooler wall and inserted it into the hole.
This pipe will serve as a channel for the power cord.
To keep the pipe clear of debris while working, we stuffed it with a cloth to prevent any cement from getting inside.
With that done, we moved on to mixing our concrete patch.
2: Apply Concrete Patch
We worked in small batches—about 5 lbs. at a time—to keep it from drying out too quickly in the summer heat.
First you’ll want to put on some disposable gloves to protect your hands.
Any cement product is hard on your skin and will dry out your hands.
We’d also recommend that you wear a mask to protect your lungs when you’re pouring and mixing the concrete patch.
Start by grabbing an old mixing bucket, measure out about 5 lbs. of concrete patch, and slowly add water according to the package directions.
In our experience, the recommended water amount wasn’t quite enough to create a workable texture.
You want the mix to be thick enough to hold its shape—not crumbly—but not so runny that it slides off the cooler when applied.
Stir until you reach a consistency that sticks well but is still easy to work with.
We flipped the styrofoam cooler upside down and started applying the concrete patch to the bottom and outer sides first.
Once it was dry to the touch, we turned it over and coated the inside and the rim.
To mimic the natural texture of stone, we built up some areas on the exterior to create an irregular, hand-hewn look.
Don’t be afraid to add a few cracks, crevices, or rough patches—these imperfections will enhance the aged, rustic feel of your faux limestone trough.
As we were working the cement we noticed that we could see 4 parallel lines (our fingers) in the cement.
So after we applied an area, we went back over the area and patted it with the palms of our hands.
Overall, our concrete layer was about ¼ to ½ inch thick, giving the cooler a solid, stone-like appearance.
3: Cure Cement
Once the entire trough was coated with concrete patch and we were happy with the texture, we covered it with a plastic drop cloth to prevent it from drying too quickly.
Cement gains strength the longer it cures; we left it covered for three days, then removed the plastic on the fourth day to allow it to fully dry and harden.
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4: Faux Limestone Finish
Now that the cement trough is fully cured and dry, it’s time to give it the look of aged limestone using just a few leftover paints.
We used two colors from painting my mom’s house: Behr Sculptor Clay, Behr Peppery and white.
While these are the exact colors we used, any light taupe and charcoal color will work.
First, we applied Sculptor Clay over the entire surface as our neutral base coat, skipping the inside bottom of the trough since it will later be covered with rocks and hidden.
Once that layer dried, we mixed a small amount of Peppery into the Sculptor Clay to slightly darken the tone and add subtle dimension.
Using a round brush, we applied this layer in a pouncing motion, allowing bits of the lighter base color to peek through for a more natural, stone-like effect.
Once the paint has dried you can see the variations of the color better.
Next, we created a charcoal wash by thinning the Peppery paint with about 1–2 tablespoons of water.
We dipped a damp natural sea sponge into the mixture, tapped off the excess on the side of the bowl, and gently sponged it onto the surface, turning the sponge frequently to create irregular patterns.
To soften and blend the effect, we followed up by dabbing the surface with a damp coffee filter, which helped blur the lines and give a more organic stone look.
We also used the sponge to lightly form veining lines, mimicking the texture of real limestone, and blended those as well.
Then, we added just a touch of pure white paint, applied sparingly with a damp sea sponge to create soft highlights and lighter areas, giving the finish depth and a beautiful, timeworn character.
As a final step to really enhance the realistic stone look, we took a bit of the thinned charcoal paint and applied it into the crevices and textured areas with an artists brush on the concrete.
We then blended the edges out with a damp coffee filter to soften the effect.
This subtle detail added so much depth, dimension, and natural patina to the finished faux limestone surface.
5: Seal & Caulk Trough
Once the paint has fully cured—about two hours, or as recommended on your paint can—it’s time to seal the inside of the trough to make it waterproof.
We used aerosol Flex Seal, which creates a durable, rubberized coating. (It’s also available in a quart can if you prefer to brush it on.)
Apply light, even coats to the entire inside surface of the trough, including the bottom and sides. Be sure to get into every crevice to fully protect the piece.
We chose to use the entire can to ensure the trough was completely sealed and watertight.
Once the Flex Seal is dry—follow the manufacturer’s instructions for proper drying time—place your water pump inside the trough and carefully thread the power cord through the PVC pipe hole.
Now it’s time to seal around the cord to prevent any leaks.
We used clear silicone caulk, which can be a bit messy—so be sure to wear gloves, and keep a popsicle stick handy to help smooth the sealant.
Apply the silicone under and all the way around the cord, sealing the entire area both inside and outside of the PVC pipe.
Press it into any gaps and smooth as you go for a neat, watertight finish.
Let the silicone cure fully according to the product directions—we allowed ours to cure overnight.
6: Copper Spouts
Now it’s time to assemble the copper spouts that will bring your fountain to life!
Start by cutting your copper pipe to your desired height for the water flow.
At first, we made our spouts 11 inches tall, but quickly realized they were too high—the water splashed and was easily blown out by the wind.
After a bit of trial and error, we found that 7” was the perfect height for our setup.
We also initially cut the spouts at three different heights, thinking it would add visual interest, but we learned that for water to flow evenly from each spout, they all need to be the same height.
For the horizontal section of the spout assembly (from left to right), we used: a copper elbow, a 5½” piece of copper pipe, a copper T-fitting, a 1-inch pipe, another copper T, a 4½-inch pipe, and a final elbow.
Then we inserted three 7-inch vertical pipes into the two elbows and center T-fitting pointing upward to form the fountain spouts.
We didn’t use any solder or adhesive—since this is a low-pressure system, the pipes fit snugly enough without it.
Once your copper spouts are fully assembled, attach the downward-pointing T-fitting to your fountain pump.
Our pipe was a little loose on the pump fitting, so we simply wrapped the fitting with a bit of Teflon tape to create a tighter seal.
7: Rocks and Plants
With the fountain spouts in place and the sealant fully cured, it was time to add the finishing touches.
We carefully arranged river rocks around the base of the trough to cover the pump and power cord, creating a more natural look.
To soften the overall appearance and bring the fountain to life, we added a few pond plants, including water lettuce and fairy moss.
These little touches made such a difference—the vibrant green floating plants added texture, color, and a peaceful, organic vibe to the entire setup.
A few days later, however, we noticed the fairy moss had mysteriously started disappearing.
After some close observation, we spotted bits of it on the ground outside the fountain—and realized that the local deer had likely discovered our project and claimed it as their personal drinking fountain!
Even with the surprise visitors, we think the addition of the plants made the fountain even more beautiful and welcoming.
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Troubleshooting Tips
Like any good DIY, this project came with a few lessons learned along the way.
One of the biggest keys to success is getting the concrete patch to the right consistency.
If it’s too dry, it will crumble or fall off the cooler as you apply it; too wet, and it will sag on the cooler.
Another important tip: make sure your copper spouts are cut to the same height for even water flow.
Finally, be sure to apply enough Flex Seal in light, even layers, and don’t skimp on the silicone sealant around the cord—any small gap can lead to leaks over time.
The Final Reveal
Creating this faux limestone trough garden fountain was not only an incredibly satisfying DIY project, but also a beautiful and budget-friendly way to elevate our outdoor space.
Starting with nothing more than a simple styrofoam cooler, we were able to transform it into a stunning, stone-like focal point that looks far more expensive than it actually is.
The gentle sound of water paired with the charm of pond plants like fairy moss and water lettuce makes this little fountain feel like a peaceful retreat—and even the local deer seem to agree!
While there were a few challenges and learning curves along the way, every bit of trial and error made the final result even more rewarding.
If you’ve ever dreamed of adding a garden fountain to your space, we can confidently say: you can totally do this!
I truly believe this is one of the best additions we’ve made to my parents’ yard.
Not only does it add timeless beauty to the garden, but the gentle sound of bubbling water creates a soothing, sensory experience that’s both relaxing and inviting.
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