I have 3 tortoises in Dubai, I have recently bought a UVA+UVB lamp. I used to use a humus substrate but their claws started to get long so I assumed they needed something harder to file them down. I went to the pet shop and was convinced to buy sand. My only concern is the fact the sand keeps getting on their food and they will be ingesting it. Does anyone have any ideas on what would be better, as I don’t even know what breed any of them are and I can’t find much information anywhere? Ive seen some other posts about softer substrates need something stronger as I don’t want their claws getting too long