Jacek,
Where are you getting your samples? I haven't seen any Micrasterias in a long time. I'm doing pond dips from relatively quiet ponds. Is the scum on the bottom of moving streams a better source? All I get is many species of Closterium.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA
I also like to see photo of the source lake, collecting sample is important part of adventure with microscope for me. When I pick up something and try to guess what is hiding inside, I feel like a child again
Great as usually Jacek.