Expanded Clay Pebbles – fired clay structure for reservoirs and spacingExpanded Clay Pebbles create a durable, airy physical medium. They are especially helpful where the root zone needs a stable inert support rather than organic soil.Watering behaviour Coarse clay: fired balls keep their shape Reservoir use: works in hydro and semi-hydro systems with suitable feeding Cachepot spacing: can lift nursery pots away from standing water No nutrients: plants still need an appropriate fertilising routine Using it day to dayIn hydroponic growing, roots need access to both oxygen and nutrient solution. In cachepots, a shallow pebble layer can help keep a nursery pot above accidental water, but it does not correct overwatering inside the pot.What changes in the potClay pebbles do not feed plants. Use a suitable nutrient routine for reservoir systems and keep organic-soil plants in an appropriate potting mix unless they have been adapted to a different setup.How to use Expanded Clay Pebbles Semi-hydro: Use with a reservoir-style pot for inert-substrate setups. Rinse first: Rinse until water runs clear to remove dust and fines. Re-use: Can be cleaned and re-used after a soak and thorough rinse. Prep and handling for Expanded Clay Pebbles Rinse: A quick rinse removes fines so water moves evenly through the mix.