How much algae do you need for inoculation?

For the 1250L PBR (photobioreactor) we recommend starting with a 20L carboy, with an algae culture that is still growing exponentially. For Isochrysis, we recommend a density between 3-5 million cells/mL. For the 100L PBR we recommend inoculating with 2L, although you can inoculate with less, it can make the scale-up process longer.