Hi and welcome to TFF...
I don't know where the idea of soil came from but it's not needed for those plants to grow and be optimal. Substrate will do fine. If the light will become an issue pricewise when we look at the electrical bill, there are also plants that need less light to do well.
I don't know where the idea of soil came from but it's not needed for those plants to grow and be optimal. Substrate will do fine. If the light will become an issue pricewise when we look at the electrical bill, there are also plants that need less light to do well.