so many details not here. lets say your usable space is 2.4x2.4m (especially if you are doing multi plant scrogs because it is difficult to work around, water etc. and you are doing soilless. you could easily fill up a net 4x4ft or 1.2x1.2m using 4 plants, which would give you 16 plants, you could go with more, but it doesnt take very long for a plant to fill up a 0.6 x 0.6m space