To supply air to my algae samples, I am using the aquarium pump from my Biodiesel reactor. On the pressure side of the pump I use a 10 micron fuel filter to filter out wild algae that has the potential to contaminate my lab samples.
After the filter the aquarium tubing is plumbed to a tee fitting coming from the CO2 reactor. Next, two manifolds that distribute the air and CO2 mixture to the 7 containers. Each line has an aquarium needle valve to control the amount of air going to each container.
