Exploration during the day is a sign of stress. If they are exploring at night that's fine as they are nocturnal. I say make the whole tub more secure - make sure 3 walls of the tub are covered and also make the hides tight and small. Get some man-made foliage in there, also, to give them more dark spaces.
Do this and try feeding again in a week.

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London, UK
1.0 bumblebee (Hachi-C)
0.1 normal (Kali)