I've been wanting to get my guinea pigs a Roll-A-Nest for a while, but I'm not sure what diameter. The small is 3" which I know isn't big enough, but the medium (6½") and large (8") sizes are suggested for GPs. My boys are still quite small, but I want to go ahead and get the size that will be best for them when they've reached their full size. So do I get the 6½" or 8"?
Also, what diameter of PVC tubing is suggested for GPs?
Also, what diameter of PVC tubing is suggested for GPs?