iv got my ball in a 29 gallon tank and i have a zoo med under tank heater for a 30 to 40 gallon tank and 2 heat lamps and i cant seem to get the humidity u past 30% or 40% and thats with spraying the tank occasionally witch only raises it to 50% to 60% for a few minutes then it drops back down to 30% or 40% does anyone have any ideas that i could try be greatly thankfull.