Could this honestly be algae? (Now with pics..)

[eponymous]

Yea, that is the reason why i recommend it so much is I have heard of stories of guys over/under using PT Nuke and getting nasty results, but nothing bad about the use of silver. I think Naekuh has had a loop running for a couple of years on silver and distilled with no issue.

If you can drain it and keep it containment free. I'm not certain if I would try though. Best bet is just to get some silcon and coat the threads in it. Not too thick though as you don't want it getting into the res itself. That should keep the water from getting down in there and silicon doesn't negatively effect plastics or rubber o-rings.

Thanks. Would PTFE work instead of silicon?