Made with Aragonite Sand it has the most natural texture, easy for bacteria to colonize and has the look of the ocean's reef.  It's great for a "Grow Out" Softies, LPS, SPS and it's easy to cut into segments if you need to break off a certain size.  You will receive a total of 45 XXL 3" inch Frag Disk, these are very high quality/uniformed frag disk and have been cured properly so it will not affect or change your tank's parameters.  These are not made of ceramics or artificial playground sand like some other products. Will not add phosphates to your setup or alter your PH and Alkalinity.  These have good weight and quality to them and blends into your current sand bed.(For those looking to save on shipping this is the best option. I am able to fit 45 XXL 3" frag disk in the med flat rate priority box. It will weigh around 9 lbs.)Over 25000+ disk sold and shipped.  Thank you for your continued support.