Autopot Root control disc Black Gold suits 8.5 & 15 Litre square tray

The Autopot Black and Gold copper impregnated square root control discs are made to fit both the 8.5 litre Autopot pots and the 15 litre Autopot pots and square trays. The root control disc is placed in the base of the Autopot tray, under the pot, to help prevent stray roots from growing towards the aqua valve and at the same time it helps control any algae growth.