I had a plant in the vegetative stage outside planted in soil which was doing very poorly. I removed the plant completely from the soil, washed the roots clean, cut him down to a stem, (I know I should have left some leaves but they were all covered in fungus and bugs and long beyond salvagable) then shaved some of the stem just above the roots and applied root hormone after which I replanted it in rock wool cubes soaked in water at a ph of approximately 6.5. it's currently inside under an 80 watt flourescent. Is it possible to revive it? If so what might I do to induce foliage growth?