i am a new owner with 2 crabs named crunchwrap supreme (crunchy) and crispy chicken sandwich (crispy).i have a 10 gal tank with a tikaton uth on the back (i think its like the zoomed ones). to start out i had sand in the tank planning to change it out to a sand and coco fiber mix but i found out it was fine sand instead of the all purpose. so put them into a little temporary bin with coco fiber and they LOVED it. they immediately buried down which they couldnt do in the other sand. i put a play sand coco fiber mixture in there last night and transferred them in. crunchy immediately went into one of the coconut hides like he did when it was just sand in there. and crispy buried somewhere i havent seen him. i know that can be normal for molting or hes just stressed. but crunchy didnt bury, he was in his shell when i went to sleep but i woke up a few times and checked on him and he was out roaming the tank. but ever since 5am when i woke up hes been in his hide. but hes not in his shell he has been just standing there. ive seen his antennae moving but im still worried. before today the temp was at a steady 75, i couldnt get it to heat up any more but i have put a blanker over it (not on the heater as i read that i shouldnt). now the tank is at 80! do you think that may help or does anyone know what else could be happening with little crunchy? i got them from petco, they were labeled as the small ones, i havent gotten a chance to measure them tho. i also bought some of the destress water conditioner, but i already put them into some regular conditioned water to try and clean their shells out a little but they immediately got out. i dont want to mess with them any more but if the destress will help i will do it. sorry if this isnt supposed to be in this category, i wasnt sure where to put it but i figured here bc my crabs and i are new. 
this is what hes doing currently and every time ive checked since about 5am, just standing there
