I have a 55 gallon terrarium that was constructed about a month ago, a third of it is submerged in half inch of distilled water. The distilled water is getting murky and leaving a foul odor, it smells horrible, there isn't a draining system anywhere, cause its basically a 55 gallon aquarium tank, that I transformed into a terrarium, and there wasn't anyway I could put a filter in there cause the water is low, is there any way to save this terrarium or do I have to rethink a new way to build it? Please help me, it smells so bad.