Fire and Water Bowls: How They Work and How to Choose

A fire and water bowl does two things at once: a gas flame burns in the center while a stream of water spills over the rim into the pool below. By day it reads as sculpture with moving water. After dark the flame doubles in the water and the sound of the fall carries across the yard. This guide explains how the two systems share one bowl, how fire and water bowls differ from fire on glass and fire on water designs, and what to weigh when you choose a shape, finish and ignition.

What a fire and water bowl is

Most fire and water bowls are cast in glass fiber reinforced concrete (GFRC), shaped like a wide vessel and set on the edge of a pool, a raised wall or a pedestal. Gas comes up through the base to a burner in the middle of the bowl. Water comes up through the base on its own line and leaves through a spout, scupper or spillway on the rim, so it falls into the pool rather than onto the deck.

That last point is the design brief for the whole product. American Fyre Designs puts it plainly in its fire bowl manual: models with a water feature are designed to empty into a pool, pond or similar body of water. The bowl is not a closed fountain with its own reservoir. It borrows water from the pool system and returns it there.

Two systems sharing one shell

Inside the bowl, the gas side and the water side are kept apart. The burner sits in a pan in the center, surrounded by lava rock or fire glass. The water line runs to the spillway on the rim and never floods the burner area.

Slick Rock Concrete describes the same principle for its Cascade fire on glass bowls: the water bypasses the fire components through a plumbed scupper, which leaves the interior of the bowl dry so a standard electronic or match lit fire unit can sit inside. Prism Hardscapes' fire and water bowls pair a 12 inch six spoke burner rated at 65,000 to 85,000 BTU (manual or electronic) with a water flow of 15 gallons per minute through a 3/4 inch NPT connection. Those two figures tell you most of what the bowl asks of your site: a gas supply sized for the burner, and a water supply sized for the flow.

Because the water is controlled back at the pool equipment and the flame at the bowl or its ignition switch, the two are usually run on their own schedules. Water can run on a sunny afternoon with no flame at all, and at night the fire can take over.

Fire and water, fire on glass, fire on water

Several related designs share the same look from across the pool. Knowing the difference helps you read product pages and talk to your builder.

Fire on water is the most theatrical of the group. Fire by Design's submersible ignition system (SUBEIS) is designed to be installed and operated in water, and its manual states that the burner manifold must be submerged 3 inches below the water surface. We cover it in Fire on Water: How Flame-on-Water Bowls Work.

Many collections are built so one shape comes in several of these versions. Prism offers its Pool Collection as fire only, water only, or fire and water, and Fire by Design describes its Wok, Oblique and Tuscany bowls as available in fire only, fire and water, or fire on water ready configurations. That makes it easy to repeat one shape along a pool wall while changing what each bowl does.

Match lit or electronic ignition

A match lit bowl uses a key valve at the bowl. You turn the key and light the burner by hand. It is simple and needs no power at the bowl, but someone has to walk around the pool to light each one.

Electronic ignition lights the burner from a switch, a timer or, through a relay, the pool automation system. For a row of bowls that is the difference between a ritual and a single button. Prism offers three options on its pool bowls: a key valve, a battery spark system (propane only), and its PH-Ignite electronic system. Slick Rock's electronic bowls use an All Weather Electronic Ignition System (AWEIS), whose manual shows wiring to pool controllers such as AquaLink and Pentair IntelliTouch through a relay, so the fire can come on with the pool lights in one scene.

Distance from the water matters for electronic systems. Fire by Design requires its 30 volt DC ignition, its certified 30 volt DC power supply and a gas line bonded at each feature for any feature within 5 feet of a pool or spa. Prism states that PH-Ignite can be installed within 5 feet of pool water. If your bowls will sit on the coping, tell us when you order so we can confirm the right ignition version with the manufacturer.

Choosing shape, size and finish

Start with the architecture of the pool. Rectilinear pools with clean coping pair naturally with square and straight sided bowls, such as Prism's Lombard-P or Slick Rock's Cascade Square. Freeform and resort style pools carry round and flared bowls well, such as Prism's Sorrento and Verona or Fire by Design's Wok. A low, wide bowl like Prism's Moderno 2-P (29 inches across, 12 inches tall) keeps a sleek profile on a raised wall; a deeper bowl like the Sorrento (33 inches across, 18 inches tall) has more presence from a distance.

Finish is where the bowl meets the rest of the hardscape. Prism's standard finishes are Pewter, Natural, Cafe, Ebony, Ultra and Coastal. Slick Rock offers 12 stained colors, from Great White and Gray to Onyx, Denim and Seafoam, and a choice of copper or stainless steel spillway, or no liner. A copper spillway warms up a gray or white bowl and ties in with copper light fixtures; stainless reads cooler and more architectural. Handmade concrete varies slightly from piece to piece and from the color chart, which both Slick Rock and American Fyre Designs note in their documents.

For placing several bowls along a wall, see Designing a Pool Edge with Fire Bowls. For the look of the water itself, see Sheet, Scupper or Spillway.

What installation involves

A fire and water bowl brings together three trades: gas, plumbing and electrical. Your pool builder or landscape contractor usually coordinates them. The water line runs from the pool equipment to the bowl, often with its own valve so your builder can balance flow between bowls. The gas line runs to the burner. Electronic ignition adds low voltage wiring and a switch or relay. Bonding of metal parts near the pool is part of the electrical scope. Our guide to pumps and plumbing for water bowls explains the water side in plain terms.

Living with a fire and water bowl

Day to day, a fire and water bowl asks for a little attention. Prism's manuals ask owners to wipe the bowl before each use, not to light the burner with wet media, and to use the designated cover when the bowl is not in use. American Fyre Designs adds that the unit should be turned off and fully cooled before a cover goes on. Slick Rock warns against chemical cleaners, pressure washers and non breathable covers, which can damage the sealer. Concrete takes on a patina outdoors, which is part of its appeal. For more, see Caring for Pool Bowls and Winterizing Fire and Water Bowls.

Where to start

These bowls show the range: Prism's round and square pool bowls, including an electronic ignition version, Fire by Design's Geo Round Essex, Slick Rock's fire on glass Cascade and a water spout Marseille from American Fyre Designs. Browse every option in our Fire and Water Bowls collection.

Questions about a specific bowl or project? Call us at 888-887-1870, Monday to Saturday, 9 to 5 Eastern, or use our contact page.

Common questions

Does the water put out the fire in a fire and water bowl?

No. The water and the gas travel on separate lines, and the water is routed to a spillway or scupper on the rim rather than through the burner area. Slick Rock, for example, describes its plumbed scupper as keeping the interior of the bowl dry. Media can still get wet from rain or splash, and Prism's manuals say not to light the burner with wet media, so let it dry first.

Do fire and water bowls need their own pump?

Not always. Many bowls run from the pool's circulation system, but the pump has to deliver enough flow for every bowl. Prism specifies 15 gallons per minute for each of its fire and water bowls, so four bowls add up to 60 gallons per minute before anything else on the system. Your pool professional decides whether the existing pump can carry that or a dedicated pump is the better choice.

Can I use a fire and water bowl without a pool?

The bowl needs somewhere for the water to land and a way to send it back to a pump. American Fyre Designs states that its water feature models are designed to empty into a pool, pond or similar body of water. Without a pool, that means a built basin or pond with its own pump. If you only want fire, most shapes are also sold as fire only bowls.

Can I choose different finishes for a set of bowls?

You can, since each bowl is ordered with its own finish. Most designers keep one finish across a set so the row reads as a single composition from across the pool. Because the bowls are handmade concrete, color can vary slightly from bowl to bowl and from the chart, so ordering a matched set at the same time is the safest way to keep them close.

Sources

1. Prism Hardscapes, Fire and Water Bowls Instructions, burner, water flow and bowl sizes
2. Prism Hardscapes, 2025 Product Guide, Pool Collection pp. 22 to 23, finishes p. 31, ignition options pp. 32 to 33
3. Prism Hardscapes, PH-Ignite Installation Guide, REV 05312022
4. Prism Hardscapes, Tavola Series Installation Guide, care and cover instructions
5. Slick Rock Concrete, Cascade Water + Fire (fire on glass), How it works
6. Slick Rock Concrete, Resources, Spillway + Scupper, Colors
7. Slick Rock Concrete, AWEIS Ignition System Instructions 2024, pool controller wiring pp. 14 to 15
8. Slick Rock Inc., Care and Maintenance
9. Fire by Design, FBD-0002 SUBEIS Ignition System Instructions, REV 090826, water level p. 5
10. Fire by Design, PPHX GFRC Bowls
11. Fire by Design, Pre-Installation Checklist: Automated Fire Features, REV 090226, features within 5 ft of a pool or spa
12. American Fyre Designs (Robert H. Peterson Co.), Fire Bowl Installation and Owner's Manual L-H2-064, water supply setup
13. American Fyre Designs, Available Finishes and Textures