Best selling Coolant for water coolers

Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.

1. EKWB EK-CryoFuel, 1000ml ready-mix - Clear

Ready-to-use transparent coolant for water cooling systems from EKWB. The bottle contains 1000 millilitres of finished mixture from the EK CryoFuel series with bio growth inhibitors and corrosion protection with high material compatibility.

The features of the EK-CryoFuel coolant at a glance:
Compatible with copper, brass, aluminum, stainless steel, acetal (POM), acrylic, rubber (NBR, EPDM, Neoprene)
Incl. bio growth inhibitors
With corrosion protection
90% biodegradable within 10 days 

EKWB EK-CryoFuel, 1000ml ready-mix - Clear (1000 ml, Ready-mix)
Coolant for water coolers
−13%
EUR18,21 was EUR20,90 EUR18,21/1l

EKWB EK-CryoFuel, 1000ml ready-mix - Clear

1000 ml, Ready-mix

2. XSPC EC6 Coolant

XSPC is a UK-based manufacturer that is already well-known and popular there. The water cooling specialists are distinguished by their excellently crafted and innovative products. Only the best materials are chosen, with a strong emphasis on outstanding aesthetics. Despite these high standards, XSPC can shine with a truly competitive price, making it a real contender against established brands.

The EC6 is a powerful, environmentally friendly coolant designed for use in water cooling systems. It is based on a blend of refined plant extracts and non-toxic corrosion inhibitors, as well as non-toxic dyes. It provides excellent protection for copper, brass, steel, nickel, aluminum, and has also been tested with a range of acetal and acrylic plastics.

EC6 features high thermal conductivity, low electrical conductivity, and thanks to a wide range of intensely bright colors, it is the perfect coolant for all water cooling setups. The available 1-liter version comes in a pure white color and is opaque, making it ideal for subtle builds.

Note: EC6 Coolant is not suitable for mixing with other water additives, except for EC6 ReColour Dye.

Technical details:
- Quantity: 1 liter
- Color: White (opaque)
- Features:
- low electrical conductivity
- non-toxic dyes. 

3. EKWB EK-CryoFuel Solid Premix - Electric Purple

The EK-CryoFuel Solid from EK Water Blocks has been designed to provide enthusiasts and gamers with the best performance and efficiency while maintaining colour stability for up to two years. In comparison to semitransparent coolants, this Solid series offers special color stability. The colour particles do not settle, so the fresh colouring is retained for a long time. The CryoFuel coolant is not only durable, but also very environmentally friendly: in ten days the coolant can be biodegraded to 90 percent.

All the more astonishing and pleasing as the EK-CryoFuel is also mixed with substances against biological growth within the water cooling circuit as well as anti-corrosion agents and thus offers protection against the two deadly enemies of watercooling for many months: biological residues and rust. However, these advantages should not overlook the high cooling efficiency.

In addition, EK Water Blocks' EK-CryoFuel offers comprehensive compatibility with virtually all metals, rubber types and plastics commonly used in water cooling applications. The bottle offered here contains 1,000 ml of ready-to-use coolant. The colour of the EKWB EK-CryoFuel Solid in a 1,000 ml bottle is purple, EK Water Blocks calls the colour itself "Electric Purple". Whether for Wakü enthusiasts or passionate PC modders, the EKWB EK-CryoFuel is a very good choice in terms of environment and performance. 

EKWB EK-CryoFuel Solid Premix - Electric Purple (1000 ml, Ready-mix)
Coolant for water coolers
−22%
EUR21,87 was EUR27,90 EUR21,87/1l

EKWB EK-CryoFuel Solid Premix - Electric Purple

1000 ml, Ready-mix

4. XSPC EC6 ReColour Dye - UV Violet

XSPC is a UK-based manufacturer of cooling solutions for high-performance PCs. The water cooling specialists are known for their well-crafted and innovative products. Only high-quality materials are used, with a strong emphasis on stylish aesthetics. Despite these high standards, XSPC offers an excellent price-performance ratio.

The EC6 ReColour Dye is a concentrated dye for use in water cooling systems. 30 milliliters of this color additive is sufficient to provide up to 5 liters of coolant with a vibrant and long-lasting color. It offers excellent protection for copper, brass, steel, nickel, aluminum, and has also been tested with a range of acetal and acrylic plastics. It is non-toxic and is preferably mixed with transparent or opaque XSPC EC6, ECX, and Ultra Pure Water coolants in white and clear variants.

The color Purple is additionally UV-active. It reacts under appropriate lighting (black light) with a fluorescent glow, making it ideal for eye-catching builds. Furthermore, all EC6 ReColour color additives can be mixed together to create custom color blends or to enhance UV activity when one or two UV-active variants are used.

Technical details:
- Quantity: 30 ml
- Color: Purple (UV-active)
- Mixing ratio: 6 ml per liter of coolant
- Features: non-toxic dyes. 

5. EKWB EK-CryoFuel

EK-CryoFuel contains synergistic corrosion inhibitors to protect metals commonly found in computer liquid cooling systems. It has been tested according to BS5117 (ASTM D1384) and meets the corrosion standards for copper, brass, aluminum, and stainless steel. The coolant includes everything a high-end liquid cooling system needs for efficient thermal performance and the necessary protection of your water blocks. All EK-CryoFuel mixtures are biodegradable (90% within a 10-day period) and do not persist in the environment or cause bioaccumulation. EK-CryoFuel offers a shelf life of 2 years from the date of filling. 

6. Aqua Computer Double Protect Ultra 5l canister

DP Ultra is the result of extensive testing and contains specially coordinated active ingredients that guarantee optimal protection against corrosion and excellent cooling performance. It is manufactured under high-quality standards using the highest quality, absolutely pure active ingredients entirely in Germany. DP Ultra has been specifically developed for use in PC cooling systems with copper and aluminum components and is only very minimally electrically conductive. The active ingredients also reduce bubble formation and optimize heat transfer at surfaces through improved flow behavior of the coolant, leading to optimal cooling performance in your system. DP Ultra is a clear and nearly odorless solution. DP Ultra was developed directly by Aqua Computer in collaboration with Dr. Tobias Voigt. Compared to other available ready-to-use mixtures, DP Ultra achieves very good cooling performance and improves flow behavior due to its ingredients. DP Ultra is pre-dosed and ready to use. We recommend an annual replacement of the coolant. 

7. Alphacool Ultra Pure Water

Purified by five special filters, including a reverse osmosis filter, the water is completely free of salts, metals, and germs, which are commonly found in tap water. The purification process eliminates chlorine, odors, heavy metals such as lead, copper, cadmium, and mercury, as well as agricultural chemicals, hormones, antibiotics, pesticides, fungicides, herbicides, drug residues, carcinogenic organic chlorine compounds, radioactive substances, asbestos fibers, tar compounds, nitrites, nitrates, bacteria, viruses, fungal spores, and cysts.

As a result, the water leaves no residue during evaporation and does not form limescale deposits. Additionally, due to its low pH value of 6.0 to 7.0, Ultra Pure Water can even absorb deposits (up to a certain amount), ensuring that the cooling system remains permanently clean. 

8. Aqua Computer Double Protect Ultra

The manufacturer does not compromise on coolant fluids either, ensuring reliable corrosion protection for long-term stable operation with high reliability. This prevents the accumulation of metal in the fluid and, in turn, the thinning of metal components (copper, aluminum, etc.) in the water circuit. 

9. Corsair Hydro X Series XL5 Performance Coolant

Corsair Hydro X Series XL5 Performance Coolant brings your custom cooling system’s color scheme to life, available in a wide choice of vibrant translucent colors. Premixed and ready to use right out of the bottle, XL5 Performance Coolant includes anti-corrosion and anti-bacterial inhibitors that keep your custom cooling system running clean and cool. Formulated to protect copper, brass, and nickel fittings and blocks, XL5 Performance Coolant brings vivid color and cool temperatures to your custom cooling system. 

10. EKWB EK-CryoFuel Solid Premix - Scarlet Red

The EK-CryoFuel Solid from EK Water Blocks has been designed to provide enthusiasts and gamers with the best performance and efficiency while ensuring color stability, with a long operational life of up to two years. Compared to semi-transparent coolants, this Solid series offers exceptional color stability. The color particles do not settle, allowing the vibrant color to be maintained for a long time. Additionally, the CryoFuel coolant is not only durable but also very environmentally friendly: it can be 90 percent biodegradable within ten days.

Notably, EK-CryoFuel is also infused with substances to combat biological growth within the water cooling circuit, as well as anti-corrosion agents, providing protection against the two main issues in water cooling: biological residues and rust, for many months. However, the high cooling efficiency should not be overlooked alongside these advantages.

Furthermore, EK Water Blocks' EK-CryoFuel offers comprehensive compatibility with nearly all metals, types of rubber, and plastics commonly used in the water cooling sector. The bottle offered here contains 1,000 ml of ready-to-use coolant. The color of the EKWB EK-CryoFuel Solid in the 1,000 ml bottle is red, with EK Water Blocks referring to the shade as "Scarlet Red." Whether for water cooling enthusiasts or passionate PC modders, the EKWB EK-CryoFuel is an excellent choice in terms of both environmental impact and performance. 

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