My russian receives sun since 9 am until 4 pm is this enough sun for him. I don't have a basking light since the temp. here varies from 78 to 95 almost all the year. Do I need a uv light, he hides from the sunlight sometimes. I have him in a cement mixing tub in terrace but am building him an outside enclosure 6ft.x 6ft where he will get sun from 11 am to 4 pm, is this enough sun or should I take him to my terrace to receive the morning sun.