Quote:
Originally Posted by Cohibaman
Good call using RODI.
The “DI” (deionized) part of “RODI” is an additional stage that removes most of the remaining ions left in the water after the reverse osmosis stage. If you’ve already got RODI for your fish tanks, it’s a great choice for record cleaning machines.  |
As you note, de-ionized water (DI) is water with most of its ions removed; it has almost all inorganic contaminants removed though not all organic chemicals (which s/b the job of the RO filter.) When sitting around it will attack any material it contacts to get those ions back - it trys to leach ionized minerals from its surrounding material. That's why storing it can be problematic.
If you want to use DI water in a USC, you want a tank suited for it, which would be glass or stainless steel. There are no glass usc tanks that I know of. Better USC stainless steel tanks should have smooth, clean passivated welds, preferably made with 316 Stainless steel. Something to consider when choosing a tank - formed (not welded) rounded corners at the bottom. It's funny where this hobby can take us.