I spoke with a representative of Chroma filters regarding a problem with my ad lum filter and flats. Very helpful so I thought that I would try to end all of the rumors about their connection with the astrodon line.
They do not make any of the ad filters as of today and have not manufactured them for a number of years. I now know for sure that my filters from Don were not made by Chroma. I have been back in the hobby since early 2015.
If you are interested in a different USA made filter manufacturer, then you might want to look at and speak to the folks at Chroma. They were very gracious. I just don't think it is fair to Chroma or Don/Farpoint to let the rumors float around here on CN.