I also do the same- soil tends to drop after some time and needs topping up. But as TheBrains said - only really recommended in the early stages
MarijuanaMike Reviewed by MarijuanaMike on . bigger roots ok my question is (may sound a bit stupid but you'll get it once i execute this experiment) if you grew a plant could you get the whole main stem to root if you filled in more soil? Rating: 5