80% humidity is way to high 30-40 percent, humidity spikes aren't bad even some comfortably live at 55 but 80%? No., you can hang one of those EvaDry dehumidifiers inside the tank which when full you take it out and plug it into a wall to release the humidity it sucked up so it will be a humidifier for you. You can also use a sock with rice in it to lower humidity remember 30-40%