Creative Liquid Qauicksand Painting Art Hourglass

CPN-563960460

As the temperature and pressure change, sometimes you need to adjust the air and water inside the quicksand painting. Air conditioner is included in the package. Quicksand painting is a natural balance of water, sand and air. When the quicksand is falling too slowly, you can take some air out, and when it is falling too fast, you can add some air.