Of course this works in reverse. BioBalls, Bio,Pak, BioKaskade, etc. Any plastic media will work here. Highly saturated Oxygen rich water returning to sump or aquarium. AquaSite or Aquatic Etc, Inc. does not guarantee anything.
All information is a compilation of our experience and success.
We recommend testing of water quality. By your building any DIY projects, you agree to hold AquaSite and Aquatic Etc, Inc. harmless for any damages that may occur. Inc. All rights reserved.