Woke up to find this in Boris's tank when I turned on the light. This is the spot he had been sleeping. Is this what urates looks like? I haven't found a photo online that looks like this to compare it to. My vet is closed today but I did email him a photo for tomorrow for him to look at. Hopefully this is normal and nothing serious. Last night he had his weekly soak, I cleaned his tank and put down new substrate...a new kind because the store was out of his usual coconut substrate but I think I like this type better. The coconut substrate tends to get really dry and dusty. He his new to my family, and a new kind of pet for me, and hasn't seen the vet yet because I just got him. Any help would be great thank you!