I added a bag to float in my aquarium for about 30-45 min. Then I started dripping aquarium water into the bag. Taking out part of in bag water every 15 min so it doesn't overfill. That lasted for atleast 2 hours. Then I took some rabble from my sump put it into a glass jar, added tank water to it, and added xenias to the jar. Placed it to the bottom of my tank and turned the lights off.