Have you ever seen the waste water treatment system of the aquarium? Probably not, but you should.

Most wastewater filtration systems merely use separation of liquids and solids. The aquarium uses a membrane system called ZeeWeed® Membrane Bioreactor that is able to filter out dissolved solids from water. The water that is recycled in this way is used in the toilets, and sprinklers. The aquarium recycles about 600 to 1,000 gpd in reclaimed water.

To learn more, and see pictures, click the link below.

http://www.ncaquariums.com/wp-content/uploads/2012/08/12-ZENON-SYSTEM-FACT-SHEET.pdf