i assume that you're using net pots,if they're starter cubes,take off the wrap and surround the cubes with lava rock or hydroton,if they're the larger blocks,remove the wrap and stick the whole block in the pot,they might still be getting overwatered,cut back on the spray cycles or times a bit more till the wilting lets up,you can fill the top of blocks and gaps on the sides over with lava rock so the roots wont be exposed to light or air....bonbon