Bubbling and biothrive.

Ok so i have biothrive as my Nute line. And well they insist on saying the Phing is unnecessary And I want to know if some one knows why exactly? Anyways on there feeding chart it says if not used within one hour of mixing it needs to be aerated And well I wanted to know for how long you think it needs to be bubbled And why? I also understand bubbling raises PH But Will it keep raising?

I just need to know how long to bubble and why to bubble? And how long till it is no good anymore.
Thanks Critik.............

helllllllllllllloooooooooooooooooooooo

hiiiiiiiiiiiiiii!!!!