F5F Stay Refreshed Power Users Overclocking Strange "dust" in reservoir

Strange "dust" in reservoir

Strange "dust" in reservoir

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Snoopi_tacleur
Junior Member
12
01-06-2026, 12:13 PM
#1
Hello community,
I've been testing my new water cooling loop for a month now. Recently, I found some unusual dust in the reservoir.
I'm using neoprene tubing (EPDM rubber), which I think isn't due to plasticizer leaching. The coolant is a premix from ekwb that includes a biological growth inhibitor.
Any advice on what this might be or how to clean it?
Reservoir photo: Complete loop:
S
Snoopi_tacleur
01-06-2026, 12:13 PM #1

Hello community,
I've been testing my new water cooling loop for a month now. Recently, I found some unusual dust in the reservoir.
I'm using neoprene tubing (EPDM rubber), which I think isn't due to plasticizer leaching. The coolant is a premix from ekwb that includes a biological growth inhibitor.
Any advice on what this might be or how to clean it?
Reservoir photo: Complete loop:

S
StreetHobo
Senior Member
568
01-06-2026, 01:33 PM
#2
It seems the internal components were damaged, so you cleaned the radiator thoroughly with hot, soapy water multiple times before assembling and filling the loop.
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StreetHobo
01-06-2026, 01:33 PM #2

It seems the internal components were damaged, so you cleaned the radiator thoroughly with hot, soapy water multiple times before assembling and filling the loop.

S
sarg182298
Junior Member
45
01-07-2026, 02:06 AM
#3
It seems there was some debris inside the radiator, so you made sure to wash it thoroughly with hot, soapy water multiple times before assembling and filling the loop.
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sarg182298
01-07-2026, 02:06 AM #3

It seems there was some debris inside the radiator, so you made sure to wash it thoroughly with hot, soapy water multiple times before assembling and filling the loop.

A
arteralino
Member
137
01-10-2026, 07:01 PM
#4
Thank you for your message. This action might clarify my current situation. Is it really just a light dust that needs cleaning of the loop?
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arteralino
01-10-2026, 07:01 PM #4

Thank you for your message. This action might clarify my current situation. Is it really just a light dust that needs cleaning of the loop?

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BossLeo
Junior Member
7
01-14-2026, 12:46 AM
#5
From my perspective, it's not just a necessity but based on what I've seen, new radiators often come with a lot of quality components from the factory.
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BossLeo
01-14-2026, 12:46 AM #5

From my perspective, it's not just a necessity but based on what I've seen, new radiators often come with a lot of quality components from the factory.