As long as you grout it several times, let the grout air out for 72 hours seal it and paint it and let the paint air out for 48. It wouldn't be harmful to even a fly.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!