Natural nutrient competition to FA is phytoplankton and rooted vegetation. Rooted weeds can compete with and suppress phytoplankton. When one or both are present, FA primarily only grows when the nutrients are in excess of what the Phyto and or weeds are using. So if you have FA growing on submerged weeds that is an big indication that you have excessive unutilized nutrients present.
Last edited by Bill Cody; 01/21/16 07:34 PM.
