Whats this foust!?

[Rogster]

what is all this foust?
I have noticed that rogy has some shite building up in the resivour? yet im using ek pre-mixed fluid... what is it & is it harmful to my pc's welfare XD
http://i99.photobucket.com/albums/l298/1stFreakyfred/ROGY/DSC_0010_zps41c1a797.jpg~original

and here is a video the shite stays up the top witch is good? excuse auto focus it was having a benny for some reason

 

[remember300]

http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=28871
i saw things like this on the web do you have anything like that in your res?

 

[Rogster]

no.. didn't think I needed it with the ek premix

 

[remember300]

i was assuming as its still water some microbes can survive and moisture might of got into the loop. thats was my thinking anyway.

 

[Rogster]

god knows, it seems to float so I may take the cap off & scoop it out? maybe its limescale?

 

[Remmy]

I wouldn't have thought you would get limescale in the loop unless you'd either used tap water as a coolant, or you'd used tap water to flush components, and not rinsed it well with distilled water afterwards. I'd scoop it out and see if the problem persists.

 

[paulstung]

Looks like it is good old mould, in the spot it's in is ideal, warm and damp, with no water flow to move it. It might have got there when you rinsed your res and before you filled it with the pre-mix. It probably left some kind of nasty behind in that flow dead spot.

I think you'll be OK to scoop it out, and try and get some of the coolant into the corner where it was, that should ( Well maybe ) kinda disinfect that spot, where the fousty stuff was lingering. Or to the extreme drain and use the coolant you have to clean it, making use if the additives, and buy some new.