I read on the site somewhere that Zooplankton is brown and phytoplankton is green but one is as benificial from a bloom standpoint as the other, is this correct? I typically fert when my secki reading is 24 inches and when I do I get a brown bloom not green and a secki reading of about 18 inches after fert.This is after several sunny days so it is not a bloom die off. My alk is around 25. Man, if I ever get this bloom thing figured out I will be on my way.

Thanks, Jake