FAQ – Fire Pit Kits


What is the best way to choose my ring size?

This largely depends on how you’d like your fire to look. We usually recommend leaving a gap of  4-6 inches between the ring and the inside of the vessel.

Can I install my ring with the holes facing down?

Yes, in fact we recommend you do when using finer materials, like sand, to prevent clogging.


Glass: What do I need to know?

Fire glass is tempered with dull edges. It comes in many different colors and when combined with fire it often has the illusion of being wet. It doesn’t burn but it does a decent job of retaining heat.

You can find fire glass with a simple internet search. There are many suppliers out there.

If you’d like to save a few bucks, put some lava rock down first and cover the last few inches with glass.

If you’d like to save a few more bucks (and source your materials the old fashioned way: with a phone book) seek out a local glass blower. They usually have a good amount of waste they’d otherwise throw out, and likely, would much rather give it to a diy-er like yourself. If you go this route,  run your fire pit for at least an hour and keep your distance before inviting your friends to hang out around it. If there are impurities in the glass it could pop the first time it heats up.

Sand: What do I need to know?

Don’t use a venturi.
Set your ring up so the holes are facing down.
Don’t put more than four inches of sand on top of your ring.
Keep a fire poker around so you can draw into the sand; watching the flame change color where you’ve drawn is captivating.
Be very careful with hot sand, it sticks to skin.

Stone and Rock: What do I need to know?

Don’t use stone that may have moisture trapped inside of it. If you aren’t sure, do some research.

Lava rock works well.


What is a venturi and what is it good for?

A venturi is a gas-air mixer. It creates a cleaner burn, reducing black smoke and soot.

When shouldn’t I use a venturi?

Venturis are great when used with coarse materials, however, using dense media can build up resistance which has the potential of creating a back flow of propane through the air holes of the venturi. We don’t recommend using them with sand or any other dense materials.


Can I use a 20 lb propane BBQ tank?

One thing to keep in mind is that propane tanks will freeze under prolonged periods of use. The faster the pressure is released from the tank, the faster the tank will freeze; therefore larger rings will freeze tanks more often than smaller ones. For this reason we recommend (especially when it’s cool outside) having two tanks available during times of prolonged use. When one begins to build up frost switch it out for the other. Freezing won’t hurt your tank but it will affect the performance of your fire pit.

How does the kit attach to the BBQ tank?

Your propane tank should come with two valve connections, the one you’re probably used to using with your BBQ is a male valve with Acme threading, the other is a finer-thread, female connection called a POL valve. The POL valve is the one your fire kit will connect to.

How long will a 20 lb tank of propane last?

This is one of our most common questions and most difficult to answer. This obviously depends on the size of your ring and how high you keep your propane turned up. A six inch ring will probably go for a good nine or more hours at a reasonable level, where a 24 inch ring might only last four hours at the same level.


Never tip your propane tank upside down, especially while it’s connected to something. If liquid propane flows into your regulator you could end up with a giant fireball.


Do you recommend putting holes in the bottom of the fire bowl to allow rain water to drain out?

To prevent rain water from pooling in your fire pit you have two options; you can put a cover over your pit or you can install a removable plug. We do not recommend having open holes in the bottom or sides of your pit unless you want fire to come through them. Remember, propane is heavier than air, it sinks, and like water, it takes the path of least resistance.


Do you ship internationally?

Yes. You can get a shipping quote by adding the kit to your cart and filling in your address.

How quickly can I expect to receive my kit?

We ship every Wednesday from our Oakland, CA location. If you need the shipment rushed we may be able to accommodate that.  Please email michelle@formandreform.com to verify a rush delivery is possible before you place your order.

More Information

For more information, email your questions to firekits@formandreform.com