i use bottled evian mineral water is it ok to use this.
Yes, that is fine.
spot on:), i dont have to leave it over night to settle though do i?
can i not just add a tablespoon to whatever a gallon of water is, mix and drink?
Correct. It will be little gritty and may even taste a little muddy, but it will not hurt you. I think the reason it is taking so long to settle out for the one poster is because the DE is new. So there is some ultra fine powder in their that will take a lot longer to settle out than the larger particles.
It won't hurt anything. I just don't like the grit, and it tastes a little muddy when stirred up so I let it settle out. Then I carefully pour off the water so the silica does not get stirred up.