Repotted the above plant into a larger pot and raised the roots again by 1 inch.
Instead of keep on raising the roots, I tried to make some by burying the whole roots in a bigger pots to allow the roots to grow wild, will open and raise them another year, hope I can get some super big roots out of them.They are in 6 to 8 inch pot now.
Hard pruned and raised the rest of the plants that I grown on the rocks, had given away a few pots to my friend who visited me while I do the repotting.
And as usual, have to deal with this..