Paintball Tanks, Paintball co2 tank, paintball air tank

Once you’ve purchased your paintball gun you’ll need a paintball tank. Tanks are available in two pressure sources, high pressure air (HPA) and Co2. It’s gun dependent as to whether you can use either or source without potentially damaging your marker.

For those just starting out choosing a tank can be a hard decision, so hopefully this guide will help.

Tank Type

There are two pressure sources CO2 and HPA which may also be referred to as compressed air. For information on paintball guns that can use both HPA and CO2 check out our blog post “Paintball Guns that can use HPA and CO2

CO2 Tanks

CO2 was used for the first paintball markers thus setting the standard for various years on what source to use. When carbon dioxide changes into gas from its liquid state it expands which creates pressure, this pressure is used to fire the paintball via the barrel.

Many CO2 tanks never have to be re-certified or re-tested and are low maintenance. The re-fills are relatively inexpensive and the tanks are compact yielding more shots than compressed air.
However there are some issues, as the liquid expands it also cools and the faster it expands the more rapid the cooling, this can lead to inconsistent shooting. If you ever see white snow falling from the barrel, it’s actually dry ice and a sure sign the liquid is in the gun which could cause mechanical issues.

Our recommendations;

6 x 4oz Prefilled Co2 -

Compressed Air Tanks

Also known as High Pressure Air (HPA), these are usually pressurised up to the tanks rating of either 3000 or 4500 psi, the pressure is then regulated through the tanks regulator. HPA has consistent pressure and the ability to be used in all weather, accuracy is improved via the higher velocity of the gun with a higher rate of fire.

However there are some drawbacks, if you don’t have a local pro shop getting your tank filled is an issue (we fill these for a cost of £1.00). The tanks are larger and are bulky in comparison to CO2 tanks and they do cost quite a sum more. For a small amount every 5years air tanks must be hydro tested and re-certified.

Our recommendations; 

DYE Core Air Tank 1.1l 4500psi -

Empire 68cu 4500psi Carbon Air System -

Tank Sizes/Weight

The most popular tank size is 68-4500 lightweight whilst holding enough gas. At first the numbers to identify the tanks may seem a little confusing - the 68 in this case is the total cubic inches of space inside the tank whilst the 4500 represents the pound per square inch of pressure the tank can store.

Co2 tanks will often be in sizes such as 4oz, 12oz and 20oz (ounce). The tanks are designed to hold the ounces in weight as opposed to volume. It can be confusing but the measure that matters is the weight of the liquid. Your tank can be filled to the level your tank is rated for.

You need to ensure that you choose a tank with enough storage, however its important to bare in mind the more storage a tank encompasses the heavier the tank will be.


Paintball tanks can be pricey so it’s best to add protection where you can. We offer a vast range of grips and covers to protect your tank from dents, bumps and scratches.

Check out the protection we offer at


It really all depends on your style of play and marker, but if you can afford the HPA investment we recommend it.

If you have an issues don’t hesitate to contact us on 01642 605000.