Before we dive into the details, let's start with the basics. A sub-ohm tank (also known as a direct-to-lung or DTL tank) is a vape tank designed to operate with coils with a resistance level of less than 1 ohm. This reduced resistance enables greater power to flow through the coil, producing larger clouds of vapour, making it a popular choice for cloud chasers.

Sub-ohm tanks typically feature wider coils and larger airflow channels to maximise vapour production and flavour intensity. They are primarily used by vapers who enjoy direct to lung (DTL) inhalation, as opposed to mouth-to-lung (MTL) vaping, which mimics the draw of a traditional cigarette.

DTL vaping with sub-ohm tanks involves taking a slow, steady draw that sends the vapour straight to the lungs instead of holding it in the mouth first. The generous airflow of these tanks allows for massive cloud production, making them popular among experienced users seeking a more intense experience. The coil's resistance also plays a crucial role in determining the amount of vapour and the strength of the flavour.

*************************************************************

Knowing what makes up a sub-ohm tank will help you understand how they work and how they impact the overall vaping experience. Let’s take a closer look at the key components.

1. Base: The base is the foundation of the sub-ohm tank, usually with threading that allows it to be connected securely to the mod (the main device housing the battery). It contains airflow control, enabling users to adjust the amount of air entering the tank, which influences the density and warmth of the vapor.

2. Coil: The coil is the heart of the vaping experience in a sub-ohm tank. Typically made with lower resistance to allow for higher wattage, these coils heat the e-liquid and produce large vapour clouds. The resistance of the coil also affects flavour intensity and overall performance.

3. Glass Tank: The glass tank holds the e-liquid and is made from materials like Pyrex to withstand heat and avoid damage from acidic liquids. Its transparency allows vapers to see the amount of e-liquid remaining so they know when it's time to refill.

4. Top Cap: The top cap is located at the top of the vape tank, typically including a mechanism for refilling e-liquid, such as a slide-open or twist-off lid. A well-designed top cap helps prevent leaks and ensures easy access for refilling the tank.

5. Drip Tip: The drip tip is the mouthpiece of the tank where the user inhales vapour. They come in various sizes and materials, often designed to enhance the vaping experience by controlling the heat and mouthfeel of the vapour. The choice of drip tip can also influence how much vapour reaches the mouth.

Sub-ohm tanks offer a range of benefits that appeal to both novice and seasoned vapers alike. Here are some of the key advantages:

1. Enhanced Flavour: By allowing more e-liquid to come into contact with the coil at higher temperatures, sub-ohm tanks deliver a fuller and more robust flavour profile.

2. Increased Vapour Production: As mentioned, the lower resistance coils paired with high power output create impressive vapour clouds, which is a major attraction for cloud enthusiasts.

3. Variety of E-liquids: Sub-ohm tanks generally work best with higher VG (vegetable glycerin) e-liquids, which are known for generating smoother and thicker clouds. This opens up a wide range of e-liquid options to explore.

4. Customisable Experience: Many sub-ohm tanks feature adjustable airflow, allowing users to fine-tune the draw and vapour density according to their preferences.

5. Lower Nicotine Concentration: Since sub-ohm vaping typically produces more vapour, users often choose lower nicotine e-liquids to avoid excessive intake. This can contribute to a milder throat hit while still delivering satisfaction.

These benefits combine to create a powerful and engaging vaping experience, making sub-ohm tanks a popular choice for those looking to elevate their vaping game.

To achieve optimal performance from a sub-ohm tank, pairing it with the right device is essential. Not all vape mods are compatible with sub-ohm tanks, so here are some key points to consider when choosing your hardware:

1. Power Output: To support a sub-ohm tank, your device should have a sufficient wattage range, typically above 40 watts. Most modern sub-ohm tanks require power levels ranging from 40-100 watts, so ensure your mod can deliver the desired power output.

2. Battery Life: Due to increased vapour production, sub-ohm vaping consumes more power than MTL vaping. Opt for a mod with robust battery capacity to ensure longer vaping sessions without frequent recharging.

3. Temperature Control Features: While not mandatory, having temperature control functionality can enhance your sub-ohm vaping experience by providing additional control over coil temperature, reducing the likelihood of dry hits.

4. Safety Features: Ensure your device includes essential safety features such as over-discharge protection, short-circuit protection, and adjustable wattage to prevent potential hazards when using sub-ohm tanks.

Considering these aspects when selecting your device will ensure compatibility and maximise the potential of your sub-ohm tank setup.

Let’s take a look at some of the most commonly asked questions about sub-ohm tanks. If we haven’t answered your query, get in touch with a member of our team today who will be happy to help.

If you're new to sub-ohm vaping, getting started may seem intimidating, but it doesn't have to be. Here’s a straightforward guide to help you use a sub-ohm tank like a pro:

1. Prime the Coil: New coils need to be primed to prevent dry hits. Apply a few drops of e-liquid directly onto the cotton sections visible in the coil. Allow it to soak for a few minutes.

For more detailed information about coil priming, read our guide - How to Prime a Vape Coil

2. Fill the Tank: After priming the coil, attach it to the tank base. Then, fill the tank with your chosen e-liquid according to the manufacturer’s instructions. Be sure not to overfill to avoid leaking.

3. Assemble the Tank: Once the tank is filled, reassemble the components. Ensure all pieces, including the coil, are tightly secured to prevent leaks.

4. Attach to the Device: Screw the tank onto your compatible mod. Make sure it’s firmly attached but not over-tightened.

5. Adjust the Settings: Set your mod to an appropriate wattage based on the coil’s recommended range. Begin with a lower setting and gradually increase it to find your sweet spot.

6. Start Vaping: Once set, take a few slow, steady draws to enjoy your sub-ohm vaping experience. Adjust airflow and wattage as desired to customise your session further.

By following these steps, you can ensure an enjoyable experience with your sub-ohm tank, whether you’re a new or seasoned vaper.

Like any vaping device, sub-ohm tanks may encounter occasional issues. Here’s a look at some common problems you might face, along with tips on how to resolve them:

Leaking

One of the most frequent issues with sub-ohm tanks is leaking. If you notice e-liquid escaping from the tank, consider these potential solutions:

Check O-rings and Seals: Ensure all O-rings and seals are intact and properly positioned, as these prevent e-liquid leakage.

Tighten Connections: Confirm that all components are securely assembled. Loose parts can lead to spillage.

Avoid Overfilling: Adhere to the tank’s fill line and avoid overfilling, as this can cause leaks when pressure builds inside the tank.

Dry Hits

Dry hits occur when the wick isn’t saturated with enough e-liquid. To prevent or address this issue when sub-ohm vaping:

Properly Prime Coils: Always prime new coils thoroughly before use to ensure the wick is saturated.

Adjust Wattage: If your wattage is too high, it can cause e-liquid to vaporise too quickly, resulting in dry hits. Lower the power setting as needed.

Keep E-Liquid Levels Adequate: Make sure there’s enough e-liquid in the tank, as running too low can lead to insufficient wick saturation.

Burnt Taste

If you encounter a burnt taste when sub-ohm vaping, it may result from a burnt coil or poor e-liquid wicking. Follow these tips to address it:

Replace Coils Regularly: Coils have a limited lifespan, and using an expired or burnt coil typically results in an unpleasant taste.

Use Appropriate E-Liquid: High VG e-liquids work best with sub-ohm tanks. Make sure you’re using an appropriate ratio to support proper wicking.

Sub-ohm tanks offer an exhilarating vaping experience characterised by superior flavour delivery, voluminous vapour production, and a wide array of customisation options.