Feser Aqua coolant question

[computermod14]

I'm using Feser Aqua Ultra Pure Water and I was curious as to what I should be adding into my loop to eliminate any build up of mildew. Do I even need anything with this coolant?

 

[Tsumi]

Use distilled water and a silver killcoil. You can also use PT Nuke in place of the silver killcoil, but you have to remember to add it each time you change out the water.