Hi. I live in Pennsylvania. Newer tortoise owner here. I have an outdoor enclosure that I built and I have a tortoise small home for the tortoises to go into in the evening with an outdoor rubber heated reptile mat laying under the 4 inches of dirt and hay mix. I’d like to add a light source outside for the days where it is a little rainy or the direct sun doesn’t hit them. Even though it can be 80-90 degrees temp wise, the sun isn’t directly shining on them parts of the day. I have an indoor enclosure as well, but I like to have them outside during the warmer months as much as possible. Russian tortoise.