
Thermaltake Premium Concentrate Purple
200 ml, Concentrate
Here you’ll find the best-selling products in the Coolants for water coolers category. The ranking is primarily based on sales volume, while also taking factors such as availability, price trends, and overall customer relevance into account. For each product, we provide a short description and the most important insights from customer reviews so you can quickly compare the most popular options. This page always stays fresh and updates automatically.
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 for coloring the coolant in liquid cooling systems. The concentrate is virtually odorless and non-flammable, providing excellent protection for copper, nickel, brass, and aluminum.

Thermaltake Premium Concentrate Purple
200 ml, Concentrate
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
This loop cleaning and flushing kit from EK Water Blocks ensures a clean loop free from contamination. With the EK-CryoFuel loop cleaner, you can effectively remove manufacturing residues and impurities. The EK-Superflush is a solution designed to flush out production residues, contaminants, and chemical remnants.
The combination of the two concentrates enhances the cooling performance of your loop after a successful cleaning.
Technical details:
- Content: 250 ml
- Features:
- Usable for 2 years
- Compatible with copper, brass, aluminum, stainless steel, acetal (POM), acrylic, rubber (NBR, EPDM, neoprene)
- Includes corrosion protection.

EKWB EK Waterblocks EK-CryoFuel Loop Cleaner + Superflush Konzentrat
250 ml, Concentrate
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 dosing is very simple, as AT-Protect can be used undiluted to fill a water cooling system. To maintain the exact dosage, AT-Protect must not be diluted further (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 does not contain Glysantin or glycol, and therefore does not reduce the water's heat absorption. This makes it particularly suitable for high-performance PC water cooling systems.
Warnings: Contains ethylene glycol. Keep out of reach of children, rinse immediately with water in case of contact, and seek medical attention.
Note: Since this concentrate contains dyes, it is possible that it may stain clothing or other materials upon contact. We also want to point out that dyes may fade over time, which can lead to a decrease in color intensity.

Ready-to-use coolant that can be added directly from the bottle to 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. AT-Protect is odorless, colorfast, non-flocculating, and glows in its characteristic color when exposed to UV light.
AT-Protect-UV-green does not contain Glysantin or glycol, thus it does not reduce the water's heat absorption. Therefore, it is particularly suitable for high-performance PC water cooling systems.
Warning: Contains ethylene glycol. Keep out of reach of children, rinse immediately with water in case of contact, and seek medical attention.
Note: Since this concentrate contains dyes, it may discolor clothing or other materials upon contact. It should also be noted that dyes may fade over time, which can reduce the intensity of the color.

The manufacturer also makes no compromises with the coolants, 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.

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.

Concentrate: slightly brownish; finished coolant: nearly clear.
Suitable for: systems with copper and/or aluminum components.
Due to the low additive amount, the high heat capacity of water is almost completely retained.
Contains no glycol, but hydroxyphosphonocarboxylic acid!
This additive does not contain antifreeze. Important note:
Only use the additive in clean systems. For example, using it in uncleaned radiators may lead to undesirable side effects. There should be no residues of solder, oils, paints, or dirt in the cooling system. Please clean your radiator before use.

Aquatuning Corrosion protection AntiCorro-Fluid
50 ml, Concentrate
XSPC is a UK-based manufacturer that is already well-known and popular there. The water cooling specialists are characterized by excellently crafted and innovative products. Only the best materials are chosen, with a strong emphasis on outstanding aesthetics. Despite these high standards, XSPC manages to 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 offers excellent protection for copper, brass, steel, nickel, and aluminum, and has also been tested with a range of acetal and acrylic plastics.
EC6 has 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 systems. The available 1-liter variant 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.

Corsair Hydro X Series XL5 Performance Coolant brings your custom cooling system's color scheme to life and is available in a wide range of vibrant, translucent colors. The pre-mixed and ready-to-use XL5 Performance Coolant contains corrosion and antibacterial inhibitors that keep your cooling system clean and cool. It is designed to protect fittings and blocks made of copper, brass, and nickel, delivering vivid colors and cool temperatures to your cooling system.
