How much sand for my 10 gallon tank with 2 crabs

[Naebug]

Is this ok I have my bigger crab hermie and tiny which is very very active and hermie stays in his coconut lol but I read all kinds of different answers until I found u all seems kigit this sight real owners anyway back to my question I put play sand which I did a 10 to 1 ratio with my coconut fiber it's about 3 inches is that enough and I keep it moist temp stays 78 and humidity stays round 80 I need help so I don't lose another crab I just lost one of the new ones I feed them meal worms peanut butter balls and crab pellets is that enough any thoughts will be greatly appreciated

[curlysister]

HCA recommends that your substrate be at least 2-3 times as deep as your largest crab.
Be sure to have a look at the 'basics' care sheet for how to set up a basic tank for your crabs.

You will need to feed a varied diet that includes animal protein, calcium, vegetables, fruits, eggs, nuts, seeds, greens. Check out the 'nutrition' care sheet for full info. Pellets often have preservatives that are not safe long term.