For Hydroponic and aeroponic systems
Hydrokorrels Clay is the best there is.
It is clean, pH neutral, pH stable and is used in Flood & Drain systems.
Hydrokorrels Clay is also a useful additive to both Atmai and Cellmax when growing in Pot Culture and also anywhere where extra drainage is needed.
It is possible to re-use Clay Pebbles once or twice maximum by cleaning them through with Liquid Oxygen.
We do not recommend that you re-use clay pebbles more than 2 times as you will definitely notice a drop in yield if you do.