... /bag7.Usage: used for decoration of swimming pool, road pave,aquarium and building surface, 8.Acid and alkali resistant, resistant to ... so on. Spreading around the swimming poor, puting in the aquarium or inlay into the scenery wall all are the good ... Weight8g, 20g, 28gShapePebble, Cobble, triangleWater ResistantYesUV ResistantYes Glow Stone for Aquarium