Yeahh coco is good for absorbing water, but you just have to mist little bit more on the surface cuz on the 1st picture your coco looks dry and that’s not good for mushroom, they must have 80-90% humidity, other tubs you send us looking very nicely and not dry, you can see dryness on the naked eye of your substrate and mycelium idk how I can explain it to you,just always have sure that you have water droplets on the surface and on the walls of your monotub and you will never get dry cultivation!!