Quote Originally Posted by JumpingJack View Post
It should be avoided. Without water in the pump it can spin up too fast, causes damage to the bearings and impellers.

Also, while I do not use Feser One UV Blue, I have run across a few cases of people describing gunk build up from the blue.

One of the more famous builders:
http://www.xtremesystems.org/forums/...&postcount=634

take a look at her water block.... does it look familiar. In this case she wasn't using premixed Feser One I believe, but she dye bombed it. It has some tissue residue associated with it as it appears.

Generally speaking, dye coolants are troublesome, and keeping debris from your loops is very important.
thanks for your reply...

I forgot that there was not water running pump for few seconds even though there was some water in it..

How could you dissolve that junk out of the system?

Maybe this junk is causing my pump to slow down.

Man, I need to return extra three bottles of feser blue back to uk then for refund.