It is not a factor because of the inability of the gel in the water supply, but more due to the growth of plant roots are hardened so can make the broken vase. Most nursery prefer gel as a replacement for the transport of crop land in the distance.
The goal that moisture plants are still awake. Another advantage of the gel is still beautiful though coupled with other media. In Japan gel is used as a component of a terrarium with sand. Colorful gel could give the impression that the fate of the miniature garden.