Help me figure out my first DWC grow

So all I really need to know right now is how feasible it is to have multiple plants (6) in different stages of flowering all in the same DWC reservoir? I was originally thinking to grow three rezs with two plants in each but then i'd need to buy more probes, and possibly more meters, though im not sure. i have another thread tackling that issue right now. Anyways, will the ppm/ph be the same throughout flowering, more or less, or is it a huge advantage to be able to control them individually? thanks

I recommend individual rez for each stage of flowering. Different PPM nutrients at different stages, and you wont transfer any diseases.