Aerobic granules  have been successfully used in real wastewater treatment and are relatively new technology. It was started in the 1990s with a mixture of microbial communities generated into wastewater using an aerobic sequencing batch reactor. Aerobic granules are different from AGS due to their microbial flocs. Aerobic granules can still be effective even without the flocculating agents. Thus, the reduction of biomass makes the granules cost effective and more advantageous. Instead of having two tanks, the aeration tank and the settling tank, aerobic granules can use the same reactor for both treatments. By using one reactor we can save space and less time constructing a second tank, which takes lots of time and money. Making the switch from an AGR to aerobic granules saves 75% land capacity to create a wastewater treatment plant.