Quote Originally Posted by Linus@ncix View Post
Primoflex LRT has biocide lining the tubing walls. There is no need to add PT_NUKE or silver.

My loop has been running over a year with distilled + Primoflex LRT and the water in my res is still clear (and so is my res for that matter).

It works as advertised. Every extra thing you add to your loop is just asking for trouble.
Yup I have noticed that as well with the Primo LRT black. Just used distilled and no additives. However the tubes insides still turn white no matter what the tubing or what water treatment. That part is still a mystery to me.