I know lots of crabs like the "flying saucer" style, like these, but they don't really match the aesthetic of my crabitat:

I really like the way this one looks, though!:

Has anyone had any luck with upright wheels like the one above?
Oooh, good point!Hermiesguardian wrote:I second the silent spinner. I was also looking at that tree/wheel but someone pointed out a crab may get stuck between the wheel and tree.
I hang mine upside down with command hooks. Crabs will not get stuck with this method. I don’t recommend mounting it to a house- they could get stuck that way.Strelok_401 wrote:So, regarding the issue of crabs that can be stuck between the wheel and something else, what would you recommend if I were to add a wheel to my crabitat : to try to keep the wheel as close to the lateral surface as possible, in order to have something like 1mm of space between them, or to have instead a large space, more than 2.5cm/1 inch wide, between them? I wanted to mount a hamster-type wheel in my tank onto a small decorative "house" for aquarium to make it look like a water mill.