this is my new toy
these "crystal soil" things from china
that are tiny beads
that inflate 200x when you put it in water! then you pour the water out, and these stay inflated (until they dry, then you have to add water) its for plants, and contains fertilizer and holds water :D little jelly balls i have a few packages of them in all different colors
they are so much % water, that the clear ones (these are purple) are completely invisible if you put it under water XD the refraction index is almost the same
oh, and that's passionflower planted in there, not cannabis