Aqua Computer
Aquacomputer ULTITUBE D5 100 Expansion Tank with D5 PWM Pump
Best pump-reservoir combo for custom liquid cooling enthusiasts.
Experience superior PC liquid cooling with the Aquacomputer ULTITUBE D5 100 expansion tank. Its durable borosilicate glass tube offers exceptional resistance to scratches and chemicals, ensuring longevity. Integrated within is a quiet and efficient D5 PWM pump, controllable for optimal fluid circulation. A built-in stainless steel mesh filter effectively captures particles and separates air bubbles. Constructed with robust acetal and aluminum, this unit includes mounting hardware and vibration-dampening decouplers for smooth, reliable operation in demanding custom loop systems.
$194.95
Owner Satisfaction
4.7
/ 5
Category Rank
152
/ 3596
#152 in Computer System Cooling Parts
Price vs Category Average
+29%
Above average
Tube Material
Borosilicate Glass
/ Borosilicate Glass
Who it's for
- Enthusiasts prioritizing long-term durability and visual clarity
- Builders requiring reliable flow for complex cooling loops
- Users seeking silent operation and efficient air management
Who should skip it
- Budget-conscious builders looking for cost-effective cooling solutions
- Users with lightweight cases or limited mounting support
- System builders avoiding proprietary hardware ecosystems
Performance breakdown
Thermal Efficiency
The D5 pump delivers industry-leading flow rates for high-performance cooling loops.
Build Durability
Borosilicate glass and anodized aluminum ensure long-term resistance to chemical wear.
Acoustic Performance
Vibration-dampening decouplers keep pump noise levels impressively low during operation.
Maintenance Ease
Large lid opening and integrated filter make cleaning and filling effortless.
Installation Versatility
Flexible mounting options accommodate a wide variety of custom chassis layouts.
Flow Control
Precise PWM signal monitoring allows for granular control over fluid circulation.
Key Specs
Tube Material
Borosilicate Glass
Pump Type
Aqua Computer D5 PWM
Connection Thread
G1/4"
Operating Voltage
8 - 24 V DC
Dimensions (with pump)
approx. 72 x 72 x 200 mm
Glass Tube Outer Diameter
65 mm
Power Consumption
23 W (at 12 V)
Base/Lid Material
Acetal
Features
- Borosilicate glass tube for superior durability.
- Integrated D5 PWM pump for quiet, controlled flow.
- Stainless steel filter for particle and air removal.
- Durable acetal and aluminum construction.
- Easy filling through a large lid opening.
- Includes mounting hardware and vibration decouplers.
- Optimized flow for smooth, quiet operation.
- Provides tacho signal for pump monitoring.
What customers say
Enthusiasts regard the Aquacomputer ULTITUBE D5 100 as a market leader, primarily praising its exceptional build quality and precision engineering. The robust materials and German manufacturing instill confidence in its longevity. A key highlight is the seamless integration of the D5 PWM pump, which delivers powerful yet quiet flow, essential for demanding thermal performance. Users value thoughtful design elements like the effective anti-vortex feature and simplified filling process, which ease maintenance. While the unit carries a premium price, reviewers consistently find the investment justified by its superior performance and aesthetic appeal. It provides a top-tier, reliable foundation for serious water-cooled builds, making it highly recommended for those prioritizing quality.
Know before you buy
No, borosilicate glass is highly resistant to chemical reactions and staining compared to acrylic or PETG reservoirs. It maintains its clarity even when used with colored coolants over long periods.
Yes, the integrated D5 pump features a 4-pin PWM connector, allowing you to monitor the tacho signal and adjust the pump speed directly through your motherboard's fan control software or BIOS.
The integrated filter is designed to capture particles and air bubbles, so it is a good practice to inspect and clean it during your annual loop maintenance to ensure optimal flow rates.
The unit is versatile and can be mounted either vertically on a flat surface or attached to the side or rear wall of your PC case using the included mounting hardware and vibration-dampening decouplers.
Yes, the ULTITUBE D5 100 uses standard G1/4" threads, making it compatible with the vast majority of custom liquid cooling fittings available on the market.
The ULTITUBE D5 100 has a filling volume of approximately 230 ml, which is sufficient for most standard custom loop configurations.
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Ready to buy?
$195