Any DIY alternatives to PT Nuke?

[NKrader]

Dude, do you honestly consider sodium azide (NaN3), having a water solubility of 41.7 g/100 mL (Wiki), an additive? At this rate, adding colloidal silver nanoparticles to your loop is equivalent to dipping a highlighter marker core into your res! Sodium azide would be a perfect biocide if it weren't so toxic to the end user: sodium azide is acutely toxic; symptoms are often compared with those of cyanide (Wiki).

i just dont like adding anything to the water that disolves..

cuz everything i have seen that people have added has caused some drama somewhere.. ptnuke/coolant.. etc.. i just dont want to risk it. why not just get silver coil if it does the same thing, and has no chance of causing any problems at all.. aside from getting sucked into the pump

im just going off of the idea that i have never seen any problems with silvercoil and ive seen problems with every other coolant/additive out there.. (on these forums..)