
Best selling Water cooling reservoirs from Aqua Computer
On this page you’ll find a ranking of the best Water cooling reservoirs from Aqua Computer. To give you a quick overview, we’ve added the most important product details. This page always stays fresh and updates automatically.
1. Aqua Computer ULTITUBE D5 100 PRO expansion tank for D5 pumps
The ULTITUBE D5 100 PRO expansion tank from Aqua Computer is a high-quality solution for water cooling systems, specifically designed for D5 pumps. This expansion tank features a robust borosilicate glass tube that offers high hardness and scratch resistance. Compared to traditional acrylic tubes, borosilicate glass is less susceptible to thermal expansion and provides excellent chemical and thermal resistance. The black anodized aluminum rings that secure the glass tube at both ends ensure a durable connection, while the sturdy acetal base and lid allow for easy assembly and disassembly. An integrated stainless steel wire mesh filter element effectively removes particles and air bubbles from the coolant. The PRO version also includes a gas exchange membrane that compensates for temperature changes, thereby enhancing the efficiency of the cooling system.
- Borosilicate glass for high scratch resistance and chemical resistance
- Integrated filter element for effective particle and air bubble separation
- Anodized aluminum rings for a durable connection
- Gas exchange membrane for temperature regulation.

2. Aqua Computer ULTITUBE D5 200 PRO expansion tank with D5 NEXT pump
The AGB from Aqua Computer in the Pro version features a D5-NEXT pump made of durable borosilicate glass with a capacity of 470 ml. It includes a stainless steel filter and a pressure equalization membrane, as well as mounts for floor or wall installation and RGBpx lighting.

Aqua Computer ULTITUBE D5 200 PRO expansion tank with D5 NEXT pump
3. Aqua Computer Replacement glass tube for ULTITUBE 100 expansion tank
Replacement tube for ULTITUBE expansion tanks with a length of 100 millimeters. Metal rings made of black anodized aluminum are attached at both ends of the glass tube, which do not come into contact with the cooling medium. Thanks to its clever design, there is no need for internal supports or additional tubes. The tube is compatible with all ULTITUBE expansion tanks and accessories.
Technical details:
- Material: Borosilicate glass (tube), aluminum (mounting rings)
- Color: Transparent, black
- Compatibility: ULTITUBE expansion tanks
- Delivery includes: 1x tube 100 mm.

Aqua Computer Replacement glass tube for ULTITUBE 100 expansion tank
4. Aqua Computer Aquabox Professional
The Aquabox Professional has been revised and improved in various aspects compared to the previous model. Features include G1/4 connection threads, two additional connection threads on the top of the Aquabox, and a recessed stainless steel cover with sunk screws in the front panel. The Aquabox Professional is machined from solid Delrin material, making it extremely durable. The proven coolant flow through the front panel of the Aquabox has been retained, which keeps the front panel free of condensation and creates a very nice optical effect. The amount of water flowing through the front panel can be easily adjusted using two stainless steel set screws in the inlet channel.

5. Aqua Computer Aqualis DDC with nano coating
The Aqualis series expansion tanks are equipped with a borosilicate glass tube, which, in contrast to the acrylic glass commonly used for tube expansion tanks, offers very high hardness and scratch resistance, very low thermal expansion, and excellent chemical and thermal resistance. The glass tube has an outer diameter of 75 mm and a wall thickness of 5 mm. The base and lid of the Aqualis series are made of Delrin, and the lid and base are connected by a nickel-plated brass tube. The Aqualis base for pump adapters is equipped with connection flanges on the underside and can only be used with a compatible Aqua Computer pump adapter. Optionally, up to two lighting modules can be mounted in two G1/4 threads. An optical highlight is the integrated water column effect. When the return line is connected to the socket's inlet, water flows through the central brass tube to the lid and exits through eight openings, creating a striking visual effect, especially when combined with lighting. A thin acrylic glass plate near the bottom of the Aqualis minimizes air entry into the circuit. These items also feature an integrated acrylic glass window in the base, providing space for the installation of up to six LEDs. All variants are also available with a nanocoating that allows water to simply bead off the inside of the glass tube.

6. Aqua Computer ULTITUBE D5 150 expansion tank for D5 pumps
The ULTITUBE D5 150 expansion tank from Aqua Computer is a high-quality solution for water cooling, specifically designed for D5 pumps. This expansion tank is characterized by its robust borosilicate glass tube, which offers high hardness and scratch resistance. Compared to conventional acrylic tubes, borosilicate glass is less susceptible to thermal expansion and provides excellent chemical and thermal resistance. The metal rings made of black anodized aluminum that secure the glass tube at both ends do not come into contact with the cooling medium, which enhances the product's durability. The expansion tank features a large opening for filling, accessible by unscrewing the lid. An integrated filter element made of stainless steel mesh ensures that particles and air bubbles are effectively removed. The seal in the upper area is designed as a rubber molded part, making installation easier and ensuring secure positioning. The ULTITUBE D5 150 is compatible with all D5 pumps from Aqua Computer as well as similar pumps from other manufacturers, providing optimal flow behavior for efficient cooling.
- Borosilicate glass for high scratch resistance
- Integrated stainless steel filter element
- Large opening for easy filling
- Compatible with D5 pumps from other manufacturers.

7. Aqua Computer ULTITUBE D5 150 PRO expansion tank for D5 pumps
AGB by Aqua Computer in the Pro version, designed for D5 pumps from all manufacturers, made of durable borosilicate glass, with a filling volume of 350 ml. It features a stainless steel filter and a pressure equalization membrane, including brackets for floor or wall mounting, with RGBpx lighting.

8. Aqua Computer Aquatube Delrin
The Aquatube is a reservoir that couldn't be more practical. Its large opening allows for easy filling and provides optimal flow control. For individual installation of (not included) connections and lighting modules, there are a total of five G1/4 threads available on the bottom and side wall. Matching sealing screws for unused connection threads are included. Five M4 threads on both the top and bottom enable easy mounting to or within the case. Optional accessories include installation panels made of stainless steel and aluminum. The Aquatube is completely leak-proof and can be installed in any position. With this reservoir, filling your water cooling system becomes a breeze. In addition to its excellent functionality, it impresses with a unique design. The reservoir is turned and milled from solid Delrin, making it extremely durable. The Delrin white version of the Aquatube features four additional holes at the bottom for mounting 5 mm LEDs. The translucence of the material allows for spectacular lighting effects to be achieved.

9. Aqua Computer LEAKSHIELD Leakage Protection System Standalone
The LEAKSHIELD leakage protection system from Aqua Computer is an innovative solution for securing water cooling systems, particularly for the ULTITUBE series. This standalone system provides effective protection against water leaks by creating a vacuum throughout the cooling system. In the event of a leak, air is drawn into the system at the leak point, preventing the coolant from escaping. The LEAKSHIELD is equipped with an integrated vacuum pump that ensures the vacuum is consistently maintained. Additionally, the OLED display allows for easy control and monitoring of the system. The included stainless steel bracket ensures secure mounting and stability of the device. With useful features such as automatic coolant refilling and continuous system monitoring, the LEAKSHIELD is a valuable addition to any water cooling system.
- Creates a vacuum in the cooling system to prevent leaks
- Integrated vacuum pump to maintain the vacuum
- OLED display for easy control and monitoring
- Automatic coolant refilling
- Stainless steel bracket for secure mounting.

10. Aqua Computer ULTITUBE 50 PRO expansion tank
AGB by Aqua Computer in the Pro version, made of resistant borosilicate glass, 110 ml filling capacity, with stainless steel filter and pressure compensation membrane, including brackets for floor or wall mounting, with RGBpx lighting.
