We need to know the type of tortoise you have to answer your questions...Sulcata? Redfoot? The tortoise in your picture looks like a leopard, is that what it is? Humidity and temperature will vary species to species, and size and age.
Leopards and sulcatas are kept the same. Are you asking for indoor or outdoor? And how old. The threads below me signature will help you with those questions.
Unfortunately I have not kept leopards, so you need to talk to a member that does. Leopards are much more humidity sensitive (so I've heard) then sulcatas. I hear often of respiratory issues...So you must be careful with leopards. Don't bump up the humidity to 90%, like for sulcatas, before you talk to a lot of owners with actual experience with leopards. There is a member here named "Neal" that I know keeps and breeds them, you could do a search and pm him.
Just be careful with humidity...Temps are pretty similar to sulcatas. 85-88 ambient temp, basking spot of 95-100 (this is all just stuff I've read. Its to give you a vague idea, so don't take it as concrete)
Im sorry. We do not keep humidity that high. I sure dont. Temps are not right either. Its in the threads. Please read them. They are outlined for sulcatas and Leopards. Tom has spent time and research on them.
I raise small leopards and sulcatas exactly the same. Warm and humid all the time. I use closed chambers and keep the ambient temp no lower than 80 degrees day or night, and humidity around 80%. Then I use a basking light on a timer for about 12 hours a day and set the height to get a basking spot of around 100 degrees. I also soak the daily. Hatchlings go outside for an hour or two a day to get sunshine and grazing in well planted outdoor pens. As they gain size I leave them out longer and longer each day. This will start them smooth and healthy until they get big enough to live outside full time with a heated retreat.
As I mentioned earlier I'm mastering humidity in Arizona in the winter.
All of your input is greatly appreciated. If I take 10% of everyone's opinions I can learn and tweak things out. I will be that much stronger and wiser than I was yesterday. NomNom has been very patient through this whole process.
Opinions are like a$$holes every one has one. I take everyone's information in strides and I'm grateful I found passionate torti owners.
I bought a humidity gauge and a water(spray) bottle. Changed her out of her dry bedding, we have bath time now, and I let her outside to graze. All of this has been a little at a time thanks to everyone here. If NomNom could speak she would thank you. Who knows she might be a he. But since she's just a baby I still have no idea. I love my Lil nugget.
My next quest is to make a turtle table. And master humidity there as well. But for now I think this is working. Thank you friends.