These plants wouldnt get spiral roots though, but they may become very hard to remove if you are gonna leave them for a long time. The roots will grow outside that pot and basically encase the net pot in roots. You wont be able to get it off without chopping of at least some of the roots. Swords, for example, can grow a significant root structure in a month. Mine used to pot out the ground when I got the tiny plants. I got them to stay down for a few days and for 3 weeks now, they hand come up. One fish put a few pieces of grave on top of the plant, I tried to pull it up a little so it wasnt buried. I couldnt move it already, for fear I would break the leaves or roots off.