It depends on how tight you want to tweak your feedings.

If you are going to do things right, you have to consider that flowering is broken down into multiple stages- early flower when you are still feeding some Nitrogen, mid flower when you are increasing the P and giving your bloom boosters if you use them, and flushing at the end. You COULD run 3 tables, but no one really does this. People growing hydro on a large enough scale to consider it wold be running a singlecrop per 2 months SOG for efficiency anyway, identical clones off the same mom.

Can it be done though?
Well sure. I've got a modified NFT flowing over hydroton. It's got removeable pellet-filled 'cells', each with a feeder drip-stake. At the moment, it's running 12 cells off a 5 gallon pail res. There are plants of 2 different ages and 5 different strains. They all have different needs but I'm not trying to maximize anything really, just see what finish time is and test out some new flavahs, and I don't even measure the nutes or adjust the pH of the tap water-based nute solution (Canna Aqua is forgiving like that!). They show assorted mild fert scorch and deficiency, but are generally healthy.

That being said, that is a totally experimental setup and I would recommend a hydro grower to run SOG style for max efficiency and minimum headaches. If you want to grow a small number of monsters with individual attention, DWC can't be beat.