How many plants per pot?

I am building myself a 6 site DWC system, but I am also putting together a 5 gallon bucket DWC system for my brother in law and was wondering how many plants can I put in one pot?

5G one plant.The root system will fill it up or mine do.
At onetime i built a multi site DWC in a tote and made a divider
where the roots would not get all tangled up.

Now I just use 5g black bucketts per plant and it grows alot
better than trying a multi plant,Plus i can run different strains.


Beech

I have ran 3 plants in a 5 gallon bubblebucket and it yielded close to the same as using a 1 plant in the 5 gallon bucket. Like SomeBeech said 1 plant fills up the 5 gallons so more plants are not gonna do much good. Even with a short veg time the roots will fill 5 gallons. Roots = bud so use more containers before using more plants.

Just remember; If you have multi-plants in one reservoir and something goes wrong, its going to effect all the plants. I will never grow more than one plant in a dwc.