Hey you guys I have a little Golden Greek and was wondering about substrate also. I use ground walnut and keep his habitat nice and dry and hot on one side... but I do soak 4 times a week. Should I add moisture to the substrate. Also my Greek is about the size of a Silver dollar, is it to early to keep protected outside during the day for natural sunlight? I am from California and I have a one year old Greek that is outside during the day and inside at night can I keep them together or will my 1 year old get aggressive..both are Golden Greeks