During setup, pre-soak your Root Control Sheet and lay it, copper face up, on top of the capillary matting supplied with your Tray2Grow.
Root Control Sheets help to prevent roots from penetrating the capillary matting and heading towards the AQUAvalve. They are highly effective due to their special copper coating.
1x 95cm x 35cm Root Control Sheet
Suitable for Tray2Grow