Most organic wastes from a normal house hold anywhere in the world. These can be broken down into food wastes, fecal wastes and urine. I planned on just mixing them all together from the start until I realized there is a more efficient way to use them. First collect avail energy from the wastes before pumping/ moving to a nitrifying bacterial container. This is where Nitrites and Nitrates are made for the  Algea to eat. Food and Fecal wastes also pass on essential vitamins and minerals algae use to thrive. In the right conditions this strain of algae can double the number of cells in just one day.