Wet the rockwool cubes.

Lid on.

Wet the rockwool cubes.

Wet the rockwool cubes.

Wetted rockwool.

Opened vents on the container lid.

Wet rockwool.

Wet rockwool.

Wet rockwool.

Wet rockwool.

Two of the clones have started to display browning leaves in the areas of new growth. The browning is happening in on the edges of the middle of the leaves of one plant and on the tips of the leaves on the other plant. The problem isn't serious yet but I'll be keeping a close eye to see if the browning worsens.

Wet rockwool.

Wet rockwool.

Wet the rockwool cubes.

Opened vents.