The Rotifer Recirculation System consists of a 200L culture tank, 2 x internal screened standpipes, filter screens, moving bed biological filter, foam fractionator, air pump, 600W heater with thermostat, peristaltic dosing pump with timer and stainless steel stand. Optional extras include: additional screened standpipes and filter screens, harvest screen, YSI water quality monitor, ozone generator, ORP monitor and controller.