So currenty my ball is in a 20 gallon long, the problem im having it that with only an UTH my warm side is fine my cold side is fine and my humidity is perfect 55-60, but my ambient air maxes out at 80 degrees during the day and is dropping to 73-74 at night generally stays 77-79 during day hrs, i added a CHE over the water bowl area and it raised the temps but is killing my humidity in about 20 min it was down to 42, so i either have good humidity and lower temps if i do nothing, yes i did the aluminum foil thing, or have low humidity and good temps if i leave the CHE, what would u do?