jesus thats a jungle of violins lol you must have upwards of 500 eh? There my fav and it looks like you take really good care in giving them the space they need.
I have noticed that in the first hours of hatching,nymphs are running amok,trying to find a good spot to rest and dry.They are running "up and down" for a while before they calm down .They are very bad plastic/glass climbersSo they absolutely need twigs,branches and at least one "level" so they can choose where to stay or run away to a different level if tackled or disturbed by the other nymphs.
They in fact do not need a large terra but a deep one.I have been able to raise a colonies of 30 nymphs taking 99% of them to L4 in a 1.5 half cut plastic bottle!!!!No substrate.
They are very fragile in the first hours and can die if they cannot hang.But once they are all hung they will all calm down with no moves for 2-3 days.I mist them gently during this time and I do not touch them .
After these 2.3days you cant start feeding them generously and manipulate them if you will.