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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 

2. Alphacool Ice water

With the Alphacool Ice Water Crystal, the water cooling pioneer Alphacool fulfils the wishes of many modders and enthusiasts: crisply beautiful colours, great effects in Plexi coolers, hoses and expansion tanks as well as longevity and compatibility with the materials used. The Alphacool Ice Water Crystal series has been tested for more than 1.5 years for all possible applications in the Alphacool laboratory as well as by external testers and modders and has been found to be very good and durable. If you want to give your PC an extra portion of luminosity, you can use the Alphacool Crystal UV ice water. The UV reactivity with UV LEDs or cathodes is outstanding. With the Alphacool ice water you give your water cooling an optical highlight with best cooling performance and longevity. 

3. 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. 

4. Aqua Computer Double Protect Ultra

Color Note: Please note that the colored Double Protect Ultra ready-to-use mixtures appear differently in the bottle than in the tube. Note: Since this concentrate contains dyes, it cannot be ruled out that it may stain clothing or other fabrics upon contact. We would also like to point out that dyes may fade over time, which can result in a decrease in color intensity. 

5. EKWB EK-CryoFuel Solid Premix - Cloud White

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 white, EK Water Blocks calls the colour itself "Cloud White". Whether for Wakü enthusiasts or passionate PC modders, the EKWB EK-CryoFuel is a very good choice in terms of environment and performance. 

6. Aquatuning AT-Protect

Ready-to-use coolant that can be added directly from the bottle into the cooling system without mixing with water. Specifically developed for closed water cooling systems, it provides effective and long-lasting corrosion protection for PC cooling systems that use different materials (e.g., copper, brass, plastics, seals). The included corrosion inhibitors work effectively and preventively, protecting the system over an extended period.

The dosage is very simple, as AT-Protect can be used undiluted to fill a water cooling system. To maintain the exact dosage, AT-Protect should not be further diluted (e.g., with water). AT-Protect is odorless, colorfast, non-flocculating, and glows in its characteristic color when exposed to UV light (LEDs, cathodes).

AT-Protect-UV-green contains no glycols or glycols and therefore does not reduce the water's heat absorption. This makes it particularly suitable for high-performance PC water cooling systems.

Warning: Contains ethylene glycol. Keep out of reach of children, and in case of contact, rinse immediately with water and seek medical advice.

Note: Since this concentrate contains dyes, it cannot be ruled out that it may stain clothing or other materials upon contact. It should also be noted that dyes may fade over time, which can lead to a decrease in color intensity. 

7. 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. 

8. XSPC EC6 Coolant, 1 liter - UV

1 litre UV active and fluorescent coolant in green with low electrical conductivity for use in water cooling systems.

9. Thermaltake Premium Concentrate Acid Green (UV)

The TT Premium Concentrate series has been specifically developed for the Thermaltake C1000 Opaque Coolant White and C1000 Pure Clear Coolant. It is a ready-to-mix corrosion protection concentrate designed to color the coolant in liquid cooling systems. The concentrate is virtually odorless, non-flammable, and provides excellent protection for copper, nickel, brass, and aluminum. 

10. Thermaltake T1000 Coolant Acid Green

The Thermaltake T1000 Transparent Coolant Series has been developed with the latest TT formula, which can be used as a corrosion protection fluid and heat transfer medium for PC water cooling. With transparent colors, users can create unique shades with T1000 by adding TT Premium Concentrate. The new formula provides the T1000 Coolant Series with color stability and low viscosity, allowing for effective flow. The Thermaltake T1000 Coolant Series encourages users to create their own colors for their system. 

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