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How to flush gpu waterblock?

post #1 of 6
Thread Starter 
I have recieved a new (6 month second hand) gtx 670 block today, it looks nice and clean inside. Just wondering if ill be needing to flush it out, (its been rinsed with DW a few times), or do I not need to bother?

thanks
post #2 of 6

Unless you see algae growing in it, then you should be fine. Maybe put some warm/hot (unless its a plexi/acrylic block) water in it, put all stop fittings on, and give it a shake or two. Then flush a few times with distilled water to clean out impurities left from the heated tap water.

 

I'd at least flush it out with some distilled water at a minimum a few times purely because of dust particulate getting into the block during the time it was traveling to you.

post #3 of 6
You can take it apart and take a toothbrush to it. But if you do not want to take the time, then DW+clear vinegar (1/3 Vinegar, 2/3 DW) works well. Put that stuff in the block, shake it a bit, let it sit for few. Rinse with hot water. Then rinse with DW. Done.
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post #4 of 6
Thread Starter 
thanks, its a plexi block so Ill just rinse a few times with distilled. My main concern was that it had been used with mayhems pastel for months prior to arriving here with me, im only using distilled water and a silver kill coil in my loop. Reckon a few shakes with DW will be enough to clear it?

I dont have spare parts and it would take me a while to remove my pump and res to flush it that way.

thanks
post #5 of 6
I usually just hook the block up to a sink tap and let 'er rip for a few minutes with semi warm water. I wouldn't go too hard with the pressure though! thumb.gif
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post #6 of 6
Pastel remnants should play well with your loop. It's not going to cause any problems. However if you have a spare pump laying around you could just have a fill from your sink that the pump pulls from and the exit goes down the drain. And you could just let it sit for a couple of minutes and you'll be good to go. Then obviously DI rinse and install. thumb.gif
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