Dear Scientist,

I am writing my Maturaarbeit on iron fertilization of phytoplankton. I need help setting up my experiment, as I need to keep the plankton alive without using any fertilizers that might counteract the effect of the iron fertilization.

In general, what should I look out for when using phytoplankton in scientific experiments? How are they maintained and treated to ensure they stay healthy?

Thank you for your assistance.