For my tank (36x18x18), i hooked up a homemade humidifier, i have plexiglass on the top and towels over that. During the day, my humidity drops to about 45%, but at night, it goes up to about 55%.

Would this be considered acceptable or should I find some way to raise it more? Although im not really sure how without having to spray daily. Im avoiding having to spray daily because im sure there will be times where I leave on vacation.