i am aware that pre-mixed coolant is bad for your system as it gunk's up ect ect...
i still want my coolant to be red though, i will be using distilled water with a kill-coil.
my question is
1. how can i color my water red without using unsafe products
2. is food coloring one of those safe methods?
im new to water cooling and just trying to learn, any help would be much appreciated.