Features:1) Crystal soil is a new type of green environmental material2) It's non-toxic, odorless and clear3) It can absorb water up to 50 - 100 times of its original weight, and after expansion it looks very colorful and brilliant4) Used for indoor plants to make your home and office more unique and beautiful 5) Ten colors available: red, pink, blue, yellow, purple, orange, green, light green, light blue, transparent6) Three shapes available: cubic shape, granule shape, pearl shapeApplication Range:Crystal Soil can be ideally used for home and office decoration,weddings,fresh and silk flower arrangements,special gifts for lover,candles berries and more.They add a sparkling accent to vases or bowls for your special occasions.Remarks:Tap water is also OK.But we still suggest you using distilled water or purified water as tap water may easily occoures germs or discolor