p> Gravels Are One Of The Most Important Part Of Aquarium Because They Keep Water Fresh And Healthy Long And Long Time By Absorbing All The Was They Work As A Good Biological Filter Because Most Of The Healthy Bacteria Grow Between Them They Work As A Great Part In Decoration These Provide A Very Healthy Environment To Plant And Fishes Shining Glow Red Color Stones (Gravel Form) Are Available In , Minimum Layer Of Gravels Is Very Important For Healthy Aquarium. These Size Pebbles Are Recommended For Walkways, Patios And Similar Areas Of Your Yard. They Have A Color That Can Easily Complement Many Landscape Designs. Perfect For Walkways, Patios And Other Areas Different Colors Can Complement A Wide Range Of Home Exteriors Resists Cracking And Discoloration, Offering Beauty Does Not Attract Termites Or Ants In Normal Use Landscape Beauty That Lasts </p>