GrowCNanswered grow question 4y ago A net is normally used to train the branches horizontally not to provide support, especially in an indoor grow. If doing low stress training or sea of green I would raise your current net and use it. No need for a second net.
You also want to be careful adding support when the plant doesn't need it. The plant will come to rely on your net for support and will not develop strong branches. It is even a good idea to have an oscillating fan blowing over your plants to beat them around like the wind to force them to grow stronger stems that are better able to support big fat buds.