DE has between 3-5% iron that can oxidize and give you more red. I don’t know why anyone is talking about Aluminum Oxide 24o grit. We use it to remove all wax and gums in one simple room temperature Buchner pass. We sue Methanol as the solvent 3:1 solvent to oleoresin. We place approximately 3/4" of Aluminum Oxide (brown or white) in a coffee filter Buchner. Pour through under vacuum and all the wax and gums are trapped at the surface of the Aluminum Oxide. If you are going to run a lot of Methanol or Ethanol Oleoresin, fill the Buchner halfway up with Aluminum Oxide and scrape the surface as you go. Rinse with Ethanol or Methanol to clean out your goodness before discarding the Aluminum Oxide. Is there a reason why I have not heard of anyone else doing this? Am I screwing anything up by doing this?