Here lies the problem...
If overwaterd, they need to dry out, but...If over nuted, then they need to be watered(flushed).that's a problem also
And I would say that it is both. Do a Flush, then Transplant them into bigger pot. Have your new soil be fairly dry, add extra perlite to the mix. After your plant has drained carefully do the xplant cover with soil and watch them. the dry soil will leech the water from your root mass, do a light clean water misting also. Watch for new growth, the hanging leaves should rise.
You should let your pot dry out almost to the point of droopy leaves from lack of water, then water/feed.
Not every time. but occasionally a dry pot is in order
I found out when my plant was not watered way past its prime time, its recovery seemed to make it stronger each time.
I used 150 watt hps... about 18-20 inches away
the big one is a bag seed sunk that I had to bring in cause the rain was lasting to long...days... no mold here...
So the lights are less than 2ft from the small ones..Silver Pearl, If you got good air flow across your canopy, you can get even closer. use the back of your hand under light. raise it 'till you start to feel uncomfortable, then lower it to the plant tops, plus a few inches to be safe. and adjust as she grows.