How much Hydrx is too much?

[Flexion]

I just installed a Swiftech Apex Ultra kit and it performs extremely well. However, coming out of a Thermaltake Bigwater that was probably junked by too much algae (just within 5 months), I want to make sure I get enough Hydrx in the system.

Swiftech recommends 10% for systems that are constantly exposed to light, but anyone have experience with putting too much coolant? I know Coolant makes the liquid more viscious.

I'd like to get some opinions.

Thanks.

 

[Dark_fire]

you only need 10%, the more anitfireeze/hydrx/additve you add the hotter everything will run cause that stuff dont conduct heat as good as water