arachnid

Hi, I have a couple of P.Goliaths that I will getting soon and can't seem to find anywhere that sells additive free topsoil. I know about the other substrates I could use but apparently topsoil holds the most moisture and best for sturdy burrows. I have tried landscaping suppliers with no luck...

i have a 30litre/7gallon bowfront tank i'd like to keep a scorpion or two in. I'm thinking of buying two sub-adult black rocks from a friend; would that work? I've had mixed opinions on keeping them together so something with actual evidence like; 'yes, i've kept two together for a year now with...