i have an exoterra humidity digital reader but when i spray the tank it reads 99% for the longest time then it goes to like 30 so idk what that means it says it with the towel on top and without i also have a Thermor http://cgi.ebay.ca/Thermor-digital-t...#ht_500wt_1182

that one is it any good? and what does indoor out door mean? lol