Just for Giggles my friend brought home some RO Water from woodys, So I thought I would check and see what the TDS reading was. Well it came out to be 35PPM which is worse then the water that comes out of my toilet bowl, it was only 25PPM. This is just a warning to check your water before you put it into your reef tank. I don't see how they can even sell this RO water.
Just venting.