| GROW!T Horticultural Clay Pebbles are made from 100% natural clay. They are clean, pH-stable, and offer excellent aeration and drainage in hydroponics, especially in flood-and-drain, deep-water culture, and drip-feed systems. Due to their unique structure and ability to cover a large surface area, they provide an ideal environment for beneficial bacterial growth around the root zone, leading to naturally healthier plants. | |