I am trying to understand the logic to dosing Macros and Micros on separate days. From what I have gathered we are really trying to avoid dosing Fe and PO4 together, but...

what is the difference between dosing PO4 and Fe say 3 minutes apart, as opposed to dosing PO4 today and then Fe tomorrow where my ambient PO4 is say 2ppm? It seems like you have the same recipe either way...

Or, is it all about the dilution into the water column? Am I just trying to keep the little cloud of PO4 from hitting the little cloud of Fe before they are diluted more completely into the tank environment?