How deep is that container? Don't keep moisture % high, plants are drooping meaning they are having a hard time releasing water from leafs, raising rh will lower transpiration. In order to put more moisture in the air it helps if there is space to do so lower rh , slightly warmer temps will promote transpiration and evaporation which you will need to assist with the plastic tub that you will be retaining moisture too long with high humidity levels.
is there even proper drainage in that thing? 😆