I have just uploaded about 19,000 photos from Aperture albums to photo stream sharing. Some I wanted to share, others I wanted to share with me and have as an extra backup to my external HD. "Your start up disc is nearly full." I now realise that in creating the photo stream albums all my photos have been duplicated - or at least I think that is what has happened. I have deleted a few photo stream albums and there I see them in the trash - many many GBs. Any way around this? I assumed that the photos would be referenced after the photos in the original albums not duplicated. Is there any way of seeing them in the library?