The 180 has a full glass lid because of the jawfish and wrasse. Then at my house the other tanks are a 55 gal and just started a 6 gallon chi over the weekend. The 125 is at my gf house and the 29 isn't back up yet. And both the bigger tanks at my house got set up before I even moved in so hard to compare. But I don't notice it being any more humid than Indiana normally is in the summer.