Originally Posted by justmitchell23
would it be possible to keep a crab alive in a tank with 80% water and a floating log or objected.
First off, what kind of crab are we talking? Freshwater or Brackish?
Next off, always introduce crabs to a cycled tank, as they are just as vulnerable to ammonia and nitrites as other fish.
Yes, you would want a lower water level for crabs, and then you want a ladder type thing, or ramp, that they can climb out of the water onto something they can bask on.
Why kind of crab exactly are you looking into? If I know, I can refer you to some specific tank set ups and great websites.