Kind of too much for the rockwool. It wicks water up and Drowns the root ball. The main stem will rot off.
LOC NAR1958 Reviewed by LOC NAR1958 on . rockwool in tubs if you are using rockwool cubes .3.5,s i think their the size of a rubics cube s if you put them in say a cut 2 litre milk carton ,can you put a 1/3 inch of water at bottom all time ,ie keep topping it up or is this to much water for the roots to sit in etc andy Rating: 5