So I read that these can be easily converted to use on a viv. Does anyone have any experience using them? My vivs are all small so I don't need something big, but running a humidifier in my superdry client is very important IMO. The box says you can use any 20z coke bottle so I'm thinking you could use a 1 liter or even maybe a 2 liter. At $25 it seems like its not too much risk. I could always return it if it doesn't work well but thought I'd see what people have to say about it. My other option is one of the big Vicks units. I like the idea of the larger reserve and it might be a higher quality unit.