Hydrofarm GROW!T 100% Clay Pebbles (10L / 0.35 cf) are expanded clay aggregate for hydroponic systems — the standard growing medium for deep water culture, ebb-and-flow, and drip systems. Clay pebbles are pH-stable, reusable, and provide excellent aeration and drainage for root zones. Pre-washed and ready to use. The 10L bag is a starter size for a few hydro containers or for topping soil containers. 4mm-16mm size range. Available in Galion, OH.
