HCA: Hermit Crab Association

I am planing on getting UTH for my twenty gallon long tank and was wondering if I should get the one that says 10-20gl or 30-40gl. Also depending on size should I mount it on the side or bottom. Thanks p.s. For those wondering i am using a fish heater in a quart jar with water for heat works well ju...

Last night large front came in from the west at 6 or 7 pm (lots of rain maybe a little thunder). when i woke up this morning my crab was up and walking around but he had moved his coconut bowl dug a hole nearly down to the bottom of the tank.

He is purple pincher who is about the size of golf ball including his shell and he usually stays above the sand.

My crab spidy went into molt last thanks giving just before the big sow storm hit eastern Washington and came out mid January and he is starting to dig in his sand again and has become very active starting Sunday. My mom thinks he can detect hyperbolic presser in his shell and will dig when he sense...