Ok I have a kinda open question before I start my next project....has anyone ever used one of these ? I know I can build it so, it's not so much any build questions but more of a functional question as in does it work .... Is it worth the effort to build it .... What kind of ambient room temp vs. chamber temp can I expect...... I guess I'm just looking for reviews from those who have used this type of homemade fermentation chamber before. Thanks for the input !!!