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Sub Ohm Tanks

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What is a Vape Tank?

A vape tank is a crucial part of a vaping device that holds e-liquid and contains the vape coil, which heats the liquid into vapor. Often referred to as a sub ohm tank, it's commonly associated with direct-to-lung (DTL) vaping and is designed for use with freebase nicotine e-liquids. Vape tanks are typically 510 threaded, making them compatible with most vape mods. Many models feature adjustable airflow, giving users full control over flavor intensity and vapor production.

Why choose a vape tank?

  • Bigger Clouds - Sub-ohm vape tanks are designed for high vapor production, making them ideal for cloud chasers.
  • Enhanced Flavor - High-quality vape coils and adjustable airflow systems allow for rich, flavorful hits.
  • Refillable Design - Most vape tanks are refillable, offering long-term cost savings compared to disposable vapes.
  • 510 Thread Compatibility - Standard 510 threading allows vape tanks to be used with a wide variety of vape mods.
  • Customizable Vaping Experience - Features like adjustable airflow and various coil options, users can fine-tune their draw, flavor, and cloud size.
  • Great for Freebase Nicotine - Vape tanks, especially sub-ohm tanks, are perfect for freebase e-liquids, which deliver a strong throat hit and robust flavor.

Frequently Asked Questions

How to clean a vape tank

Keeping your vape tank clean is essential for maintaining flavor and device performance. Here’s a step-by-step guide:

  1. Completely disassemble your tank. Remove the drip tip, glass, base, and coil. Some pieces, such as the base or top, may require unscrewing.
  2. If the coil is old or burnt, it’s best to replace it. If it’s still in good condition, set it aside for later.
  3. Run each piece, except for the coil, under warm water to remove leftover e-liquid. If you want a deeper clean, soak the parts in the warm water.
  4. Let all parts air-dry on a paper towel. Make sure everything is completely dry before reassembling.

Regularly cleaning your vape tank—ideally every 1 to 2 weeks or when switching to a new vape juice flavor—helps maintain fresh taste, optimal performance, and longer-lasting coils.

How to fill a vape tank for the first time
  • To fill a vape tank, check to see if the tank needs to be disassembled first. Most tanks come partially assembled so ensure that the coil is properly installed by screwing it into the base. 
  • Unscrew the top cap or slide it open, depending on the model. Look for the fill port - not the central airflow tube. 
  • Carefully squeeze your e-liquid into the fill port and avoid the center chimney. Fill to just below the top to prevent any leaks or spills. 
  • If you are using a new coil, add a few drops of e-liquid directly onto the cotton openings on the coil. Secure all parts back into place. 
  • Allow the tank to sit upright for 5-10 minutes to give the coil time to fully saturate with e-liquid. For faster priming, you can puff on the tank a few times without firing the mod. 
  • On your first few puffs, use a lower wattage than recommended, then gradually increase to break in the coil and preserve flavor.

Why is my vape tank leaking from the bottom?

Leaking from the bottom of your tank vape is a common issue and usually easy to fix. Here are the most common reasons:

  1. Loose connections - If your tank isn’t screwed together tightly, e-liquid can seep through the gaps. Make sure all parts—especially the base and coil are snug (but not over-tightened).
  2. Coil not properly installed - A misaligned or loosely fitted coil can cause juice to leak out of the airflow holds. Double-check that the coil is screwed in straight and fully seated. 
  3. Overfilling - Filling the tank past the max fill line can cause e-liquid to flow into the central airflow tube, causing leaks. Always leave a little bit of air at the top when filling. 
  4. Damaged O-rings or seals - Worn-out or missing rubber O-rings can compromise the seal, letting liquid escape. Inspect the seals and replace any that look stretched, cracked, or broken. 
  5. Using incorrect e-liquid - Using high-PG or thin e-liquid in a sub-ohm tank will be too runny for the coil's wicking ports. Make sure the juice you are using is compatible with your coils and device. 
  6. Inhaling too hard - Drawing air too forcefully can pull excess e-juice into the coil chamber, flooding it or causing leaks. Try slower, more gentle puffs.
  7. Not vaping at the correct wattage - Always check that you're vaping within the coil manufacturer's specifications, usually written on the coil. Vaping at too low a wattage may not allow the e-juice to vaporize completely, causing it to thin and potentially lead to leaks.

What is the best vape tank?

The best vape tank varies depending on several factors like your vaping style, wattage range, and whether you prioritize flavor or clouds. It’s also important to consider device compatibility, coil types, and whether you prefer mouth-to-lung (MTL) or direct-to-lung (DTL) vaping. That said, here are our best-selling vape tanks from 2024:

  1. Geekvape Z Tank
  2. Horizon Sakerz Master
  3. Uwell Valyrian 3
  4. Geekvape Z Fli Tank
  5. Smok T-Air Subtank

Why does my vape taste burnt with a new coil?

A burnt taste with a new coil is often caused by not priming the coil properly before use. When the coil's cotton isn't fully saturated with e-liquid, it can burn as soon as you fire your device—resulting in that harsh, burnt flavor. To avoid this, always prime your coil by applying a few drops of vape juice directly onto the cotton and letting the tank sit for 5–10 minutes before vaping.

Using your vape at too high of a wattage or chain vaping can also cause premature coil burning. Always follow the recommended wattage range and give your coil time to re-saturate between hits for the best flavor and coil life.

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