Do any of these dyes kill bacteria?

[tpfaff]

It's about time I changed the fluid in my system, do any of these things kill bacteria or are they just dyes??

http://www.crazypc.com/products/water_cooling_coolants_dyes.html

 

[mhenley]

No, but if you use a little bit of Algecide with your coolant mixture you'll be fine. Some people recommend bleach, but over time it can corrode plastic.

 

[Tsumi]

Use a silver killcoil. And I wouldn't use dyes.