Lightweight blocks can also be produced using autoclaved aerated concrete. Anaerobic lagoons are not heated, aerated or mixed. They include oxidation ditches, aerated lagoons, and stabilization ponds. Root rot can occur in hydroponic applications, if the water is not properly aerated. The proteins in egg white allow it to form foams and aerated dishes. Sucrose is another ingredient utilized in most aerated confections. For sedimentation to occur it is essential that the water be decelerated, aerated and sprayed. Finally, the product may be aerated with nitrogen to facilitate spreading it. In contact with aerated natural waters, iron salts convert to the ferric form. Inc. Cosmos Bottling Corporation was established in 1918, first known as Manila Aerated Water Company. The patent describes how the chocolate is heated and then aerated to create small bubbles. Its aerated texture comes from whipped egg white. The individual bins, including the control are aerated. In May 1935, Rowntree launched the Aero, an aerated milk chocolate. Unusual for a church, it is built of aerated concrete.