HCA: Hermit Crab Association

The humidity needs to be at least 75% in your crabitat, but it is much better for your crabs to have it around 80%. Hope this helps! Is that for real or relative humidity? I’m so confused on the two. I keep seeing relative humidity should be 75-90 but then I see actual humidity should be 70-80 and ...

Is that for

What does the Relative humidity need to be in a crabitat? And what does the real humidity need to be?