Published on December 30th, 2015 | by Kim

Herakles Hydra Tank Review | Vape Tank Review

The Hydra Tank by Sense is a 20mm diameter compact tank featuring an easy to use top fill method, a 2mL tank capacity, and mid-wattage and Ni200 (Nickel) coils.

Designed around the extremely popular Herakles platform, the Hydra features a redesigned airflow base for a sleeker look while also integrating a new top fill method.

The top cap of the Hydra unscrews revealing dual slotted openings for easy and effective tank filling.

Sense’s new 1.8 ohm coil is rated for 15 to 50W, pairing with the multitude of airflow options to fine tune user vape experience. A Nickel replacement coil is also included.

When utilizing appropriate temperature control capable devices, it gives the Hydra a wide range of compatibility and usability.

It’s compact, diverse, and fully functional, and in this Herakles Hydra review, we’ll take a look at everything it has to offer.

Product Specifications

20mm Diameter
2mL Tank Capacity
Stainless Steel and Glass Construction
Dual Slot Screw Off Top Fill Method
Fully Adjustable Dual Airflow Control
Copper 510 Connector
Wide bore Stainless Steel and Stealth Delrin Drip Tip
Available in Black, Stainless Steel, and Red Accents

What Comes in the Box?

One Herakles Hydra Tank by Sense
1.8 Ohm Kanthal Coil (Preinstalled)
0.2 Ohm Ni200 Nickel Replacement Coil
One Spare Glass Tank Section

Build Quality

The build of the Herakles is quite impressive. It has a stainless steel construction, with a copper pin, and a Pyrex glass.

The Sense Hydra is only 20mm, which is just a little bit wider than the Subtank Nano at 18.5mm.

The tank itself is rather small and fits securely on top of some small box mods or tube shaped batteries.

Another neat thing is the top fill capability.

This makes it easier to refill with your favorite E Juice and so far, no leaks at all although some have mentioned a few leaks so your mileage may vary.

The Sense Hydra also comes with a 0.2ohm Ni200 sub ohm coil.

The Ni200 coil needs to be used with a temperature sensing device and can’t be used on a device without temp control.

Airflow Quality and Preferences

With the air flow fully open, you get a really excellent direct to lung style vaping experience.

On the smallest setting, there is a tighter draw, but not quite tight enough for a mouth to lung inhale.

The Herakles has three settings: Two 1.8mm holes, dual 3.0mm x 2.30mm holes, or dual 5.50mm x 2.30mm holes.

The largest setting has just the right amount of airflow for 50 watts. It’s a warm vape, but not too hot and great for lung hits.

For those who take mouth-to-lung drags, the airflow is adjustable. Just remember to reduce the wattage to compensate.

Tank Capacity

There is only one small thing that is not great on this tank and that is the tank capacity.

It is just 2ml which is quite small, especially if you like to vape all day and to be honest, who doesn’t?

If you vape at a lower wattage, this might be ideal for you but for a higher wattage, that’s not a lot of capacity at all.

Similar Tanks to the Herakles Hydra

There are a few tanks that you might find a little similar to the Herakles Hydra and here are some of them:

Arctic Sub Ohm BTDC Tank by Horizon. Introducing the Arctic Sub-Ohm BTDC Tank by Horizon, the next evolutionary step of the Sub-Ohm Tank Era. Horizon has developed their Bottom Turbine Dual Coil (BTDC), a 0.2 ohm coil that can be driven up to 100 watts! Also included is Horizon’s 0.5 ohm BTDC coil, which is optimally driven from 30 to 80 watts. In order to supplement this capability, the Arctic has quadruple adjustable airflow slots, each measuring at a tremendous 3mm by 1mm! Each BTDC coil is specifically designed to maximize wicking rate in order to keep up with the incredible output, integrating USA Made Kanthal and Organic Cotton for top notch flavor and quality. An included wide bore stainless steel drip tip synergizes with the airflow and coil systems, enabling the max potential right out of the box. Manufactured out of 304 Stainless Steel and Pyrex Glass, and with a tank capacity of approximately 3.0 milliliters, the Arctic combines performance, quality, affordability, and ease of use in an all inclusive package. The industry has a new heavyweight champion. The Arctic Sub-Ohm BVC Tank by Horizon.
Aspire Atlantis Mega Sub Ohm BVC Tank. Introducing the Aspire Atlantis Mega Sub-Ohm BVC Tank, the largest and most capable of Aspire’s vaunted Sub-Ohm tank series. Built to synergize perfectly with Aspire’s new CF MAXX battery, the Atlantis Mega features an enormous 5 milliliter capacity coupled with quad adjustable airflow! The tank capacity holds a staggering 5 milliliters, making the Atlantis Mega a certified all-day-vape atomizer. The airflow features a quadruple adjustable airflow configuration, allowing for a 2.0mm, 2.5mm, 3.0mm, or 3.5mm for each air hole, maximizing the potential of Aspire’s new Atlantis Sub-Ohm Coil platform. Paired with the included proprietary competition bore drip tip that also includes it’s own independently adjustable auxiliary airflow, the Atlantis Mega is ready to output tremendous vapor and flavor production. Constructed out of Stainless Steel and Pyrex, the Atlantis Mega lives up to the namesake with Aspire’s continued quality and durability standards. A perfect pairing for larger mods such as the CF MAXX, box mods, and vapers’ with greater tank capacity and performance needs, the Aspire Atlantis Mega asserts itself as one of the top large Sub-Ohm tanks in the market.

Mods to Use with the Herakles

Here are some mods you might want to pair up with the Herakles for a winning combination:

Vapor Shark rDNA40. The Vapor Shark rDNA is capable of up to 40 watts of power with the ability to limit temperature on Nickel builds. It has a gold-plated spring loaded center pin and integrated wireless charging. The device is powered with a LG 2500mah 35 Amp 18650 battery.
Vapor Flask DNA40. The design and aesthetics of the Vapor Flask are all well and good, but more importantly, it performs exceptionally well. Internally, this device has been built for versatility, power, and reliability. It is equipped with the highly sophisticated Evolv DNA 40 chip, which is capable of firing atomizers with a resistance down to 0.16 ohms and supply power of up to a whopping 40 watts. Even if you’re running a sub-ohm coil at a high wattage, the Vapor Flask will keep you vaping for an impressive amount of time between battery changes due to the dual battery capability.
Heatvape Invader Mini 50W. The Heatvape Invader Mini 50w (V2) is the baddest mod on the block. Drop it, dunk it, step on it or squeeze it in a vice – the Invader Mini will win. It’s frankly unsettling how much abuse the Mini can tolerate and still vape. But underneath the Invader Mini’s ridiculously tough exterior beats the heart of a highly accurate temperature control 18650 mod with a full complement of safety features and user-friendly vv/vw adjustable up to 50 watts. The Mini has full setting memory on things like wattage, voltage and temperature, and it will only operate in temp control mode when it senses low resistance nickel wire on the atty. With pure nickel wire on your deck and temperature control mode active you can expect all the benefits of the temperature control revolution that’s happening in vaping: unbelievable flavor without dry hits. The invader will sub ohm down to 0.1Ω in temp control mode or .16 with regular wire builds.

Safety Matters

This tank is a Sub-Ohm resistance atomizer and only work on mechanical mod or devices that can handle Sub-Ohm resistance of 0.5ohm or lower.

Please make sure you have a great understanding and technical knowledge on how to use mods and batteries that can handle Sub-Ohm coils.

Do not use short or flat 510 connection on any hybrid or hybrid style device.

If you are not familiar or are unsure of particular products or set-ups, please do not use it.

Always use proper precautions and handling. To properly use Ni2000 or Nickel Coil, you must use a temperature control device.

Overall Thoughts

For a vaper who wants a minimal set up and still wants great vapor production, this is a good choice in a tank.

We’re not overly impressed with the tank capacity but the rest of the tank is really nice. It’s easy to fill with the top fill design and easy to take apart too.

It seems to vape best at around 40 – 50 watts although you can experience a nice, cool vape at around 30 watts. Ideally, 40 watts is best for flavor and cloud production.

All in all, it’s not perfect but it’s a formidable and affordable tank that you’ll probably really like, especially if you want something easy to set up and easy to use.