Flum UT Bar Clear Tank 50K — Editor’s Take on the See-Through Pod
Our Memphis distribution team has shipped well over 30,000 Flum devices in the past 12 months — Mello 20K, Float Mello Pro 50K, UT Bar Pro 50K. The Clear Tank 50K is the first one where the e-liquid reservoir is the actual headline feature: a fully transparent pod window that turns “how much juice is left” from guesswork into a glance. We pulled the device apart on day one. Here is what matters and what does not.
Editor’s Note — If you have used the dual-tank UT Bar Pro 50K, set expectations differently. Clear Tank holds a single flavor per device. The trade is visual feedback and tank focus over instant flavor switching.
What the Transparent Tank Actually Changes
Most disposables ship in opaque shells, so buyers either run out mid-puff or replace too early. The clear pod sidesteps both problems — the e-liquid level is visible from the first cloud to the last. In practice, our QA staff reported a 4 to 5 day early-warning window before depletion, which is genuinely useful for customers who pace their orders.
Battery and Puff Math
The on-device screen counts up to 50,000 puffs in ECO mode and roughly 25,000 in BOOST. The built-in battery recharges through USB Type-C; a full charge takes about 25 minutes off a standard 2A brick. Heavy daily users (350+ puffs per day) should expect four to six weeks of life depending on mode mix; lighter users stretch closer to two months.
ECO vs BOOST — When Each Mode Pays Off
| Mode | Coil Behavior | Approx. Puff Count | Use Case |
|---|---|---|---|
| ECO | Lower wattage, softer draw | ~50,000 | All-day sipping, longest device life |
| BOOST | Raised wattage, punchier vapor | ~25,000 | Stronger flavor delivery, social use |
Other Hardware Points Worth Noting
- Dual mesh coils — balanced flavor across both modes, no harsh ramp at the start of a pod.
- Adjustable airflow ring — tighter MTL to looser DTL in a single twist.
- Animated HD color display with per-flavor artwork, not a static logo.
- Soft-touch outer shell — slight squish makes it pocket-friendly.
- 5% (50 mg) nicotine strength, draw-activated firing.
Specifications
| E-Liquid | 18 ml pre-filled, sealed pod |
|---|---|
| Puff Count | ~50,000 (ECO) / ~25,000 (BOOST) |
| Battery | Integrated rechargeable, USB Type-C |
| Coil | Dual mesh |
| Display | HD animated color screen |
| Airflow | Adjustable ring (MTL to DTL) |
| Nicotine | 5% (50 mg) |
| Activation | Draw-activated |
| Tank | Crystal-clear see-through pod |
Flavor Lineup — 11 Profiles
Clear Tank ships in 11 single-flavor variants. The grouping below maps fast to a preference. For deeper flavor commentary on the wider catalog, see our best vape flavors guide or the brand-wide Flum flavor index.
| Flavor | Tasting Notes | Profile Group |
|---|---|---|
| Aloe Grape | Sweet purple grape, soft aloe finish | Fruit · Smooth |
| Mango Peach | Yellow mango with a juicy peach top note | Fruit · Sweet |
| Mango Tango | Tropical mango layered with citrus and pineapple | Tropical |
| White Gummy | Classic pineapple gummy candy | Candy |
| Icy Mint | Cool mint with a long menthol tail | Mint |
| Green Apple Ice | Crisp sour green apple over ice | Icy Fruit |
| Frozen Watermelon | Ripe watermelon with a strong frost finish | Icy Fruit |
| Cola Ice | Classic American cola plus menthol | Beverage · Ice |
| Peach Mango Watermelon | Three-fruit tropical blend | Tropical |
| Blue Razz Ice | Tart blue raspberry candy, icy backbone | Icy Candy |
| Sour Straws | Sweet-and-sour straw-candy nostalgia | Candy |
How Clear Tank Compares to the Rest of the Flum Lineup
If you are already shopping the brand, here is the editorial shorthand on where the new device fits:
- Flum Vape brand hub — full lineup, device specs and editorial reviews.
- Flum Float Mello Pro 50K — same 50K puff ceiling, Mello-series shell, larger 30 ml tank but no transparency.
- Flum UT Bar Pro 50K — dual-tank flagship, two flavors per device with one-tap switching, no see-through.
- Clear Tank 50K (this device) — single flavor, transparent pod, slightly slimmer footprint. Pick this when flavor focus and live tank monitoring beat dual-tank novelty.
Buying From VapesOnlineShop
- Authentic stock pulled directly from Flum’s authorized distribution channel — every device QR-verifiable.
- Ships from our Memphis, TN warehouse — most US addresses receive within 2 to 4 business days.
- 21+ ID verification at checkout, no exceptions.
- Climate-controlled storage — coils and e-liquid stay fresh before they leave our dock.
Editor’s Note — Stock on flagship Flum devices moves quickly around new releases. If a specific Clear Tank flavor shows out of stock, our restock cadence runs Monday and Thursday from Memphis.
Frequently Asked Questions
- Can I genuinely see the e-liquid level the whole time?
- Yes. The pod wall is transparent end-to-end, not just a thin window. You watch the level drop puff by puff from 18 ml down to the last draw.
- What is the real-world puff count versus the marketing number?
- Our internal QA team typically lands at 70 to 80% of the rated puff count for ECO mode and 65 to 75% for BOOST. Numbers vary by puff length. The on-device counter tracks exact usage.
- Is the Clear Tank refillable?
- No. Like every Flum disposable, the pod is sealed at the factory and not designed for refilling. Use it through, recycle it, replace it.
- How is this different from the Flum UT Bar Pro 50K?
- Same Flum UT shell language and the same 50,000-puff ceiling. UT Bar Pro 50K is dual-tank with two flavors that switch on demand; Clear Tank is single-tank with a see-through reservoir.
- Which charging cable does it use?
- USB Type-C. Any standard Type-C cable works; a 2A brick reaches full charge in about 25 minutes.
- What nicotine strength is the Clear Tank 50K?
- 5% (50 mg) freebase — the standard Flum US format.
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