I was wondering if the UVB light is too high if that could create soft shells. I'm just searching for why this could possibly happen. I had the light around 18 " and I've now lowered it to around 12 inches. Would this impact the shells at all ? They haven't been outside for around a week but they were still soft when outside. My other question is should I put them out for even 30 minutes to get some sun if its over 100 degrees out or just skip it all together.