Why you NEED RO/DI!!!

[Johnny Reefer]

I'm no scientist, but I think it has more to do with how the light hits, refracts, reflects on/around/about the particles in the water, than something actually wrong with the water itself. Note that the bottom bucket has a colour too. A bluish tinge. My last draw of Victoria tapwater to my RO/DI metered 20ppm going in. Not bad. But there definitely is stuff that gets removed. Before RO/DI, I used to get a brown ring in my changewater totes. Now that I use RO/DI....no brown ring.