Orange Sherbet (auto) FB42

As your plant grows the leaves will fluctuate up and down as it grows. Also depending on its light cycle. If it is about lights out they will get droopy as well. But generally droopy leaves is a moisture indicator. Either too much or not enough. More perlite in substrate can improve the plants resistant greatly to too much water. Making watering a lot easier and safer. A way to judge how much water is in soil is pick it up. Water is heavy. Will be a noticable difference between wet and dry. Good luck and happy growing 🌱🌱🌱

The rest of the plant looks OK so I would put it down to that leaf being touching the tent and sweating because of lack of air movement. Doesn't look like any deficiency. So carry on and just keep your eye on the other leaves.👍

Pic three looks like a calcium or magnesium deficiency.. I’m not familiar with cannas calmag supplement you’re using but you should be able to up that a bit to help. Consider also that too much N will cause calcium lockout also

nothing to worry about, they're just fragile once dry