Copper+Nickel Galvanic Corrosion?

[Xplitz]

Hi guys! I'm into the last part of building my computer and the only problem that i have is what liquid should i use? My Radiator and waterblocks are XSPC they are copper, and my reservoir is aqua computer and its nickel plated brass(Base and top of the aqualis reservoirs are made from Delrin and connected by a nickel plated brass tube.)[ http://shop.aquacomputer.de/product_info.php?products_id=2924 ] If i understood that right...

When I use deionized water how many months should i replace it so that it won't get conductive and won't corrode my waterblocks and radiators?

I really want to use distilled water because its cheaper but I'm more concerned about my Radiators and Waterblocks, This product does it contain any nickle? or just copper? [ http://www.frozencpu.com/products/21480/ex-pmp-263/XSPC_Photon_170_Tube_Glass_Cylinder_Reservoir_Pump_Combo_D5_Vario.html?tl=g30c97s152 ] I know its already written there but I'm really confused.. :/

Any thoughts on how can i avoid corrosion? Thanks I'm really grateful to anyone who can help

 

[manofchalk]

Distilled water should be fine to use with a kill-coil or biocide to stop nasties growing in there.

If you really want to keep your water from becoming conductive, be prepared to change it every minute.
uS is a measure of electrical conductivity.
http://martinsliquidlab.files.wordpress.com/2012/03/waterquality08.jpg?w=614&h=646
http://martinsliquidlab.files.wordpress.com/2012/03/waterquality09.jpg?w=614&h=738
Quite simply, as soon as the water/coolant hits the loop it can conduct, if it spills you have a problem regardless ifit says it cant conduct on the bottle.
Source
http://martinsliquidlab.org/2012/03/22/distilled-water-shootout-water-purity/

Corrosion, I wouldnt worry about it unless you have extremely dissimilar metals in the loop (such as Aluminium and Copper). Copper and Nickel are fairly close on the Galvanic Index, so pose little risk for corrosion.
http://martinsliquidlab.files.wordpress.com/2012/01/corrosionplating.png?w=614
Source
http://martinsliquidlab.org/2012/01/24/corrosion-explored/