Gardeners who like to watch things grow will love Crop Circles coir fiber coco peat disks! Not only do they expand to five times their starting size when placed in a bucket with three gallons of water, they also feature all the great benefits of growing with coco fiber. After soaking, Crop Circles produce roughly 1 ¹/₂ dry gallons of coco to use, about enough to fill five six-inch pots.