I had bought and returned the Zoo Med Habba Mist and returned it because it was not a "mister" at all as other reviews suggested. After returning it, I bought the Exo Terra Monsoon RS400. I am VERY impressed with this product with one exception. You will read below on numerous reviews that the timer goes out. After reading and purchasing anyway, I paid close attention to the unit and discovered after a few day, moisture appeared behind the blue power light, thus indicating moisture within the top of the unit that houses the electronics and motor. I took it apart and through trial and error, realized 1. that the internal hose fittings were letting water out and air in the lines. I did not realize it when I first hooked up the unit and powered it on, but there was an intermittent "hissing" noise, as if air was in the lines which caused the sprayers in the terrarium to hiss in between powerful yet gentle bursts of mist. I removed the internal lines, cut 1/8" off the ends of each line to create a snug fit, AND added liquid gasket sealant that you would get at your local auto store. I paid close attention to NOT allow the liquid to get in the lines or cause latent contaminants to get into the supply, thus poisoning my reptile. I also realized that I should NEVER fill the unit via it's convenient, sloped fill inlet on top of the unit. EXO Terra did a terrible job designing this unit's fill hole and did not seal it well. Therefore, when I filled the unit through the top, water was able to enter the electronic portion of the top. This probably caused the electronic programmable timer to stop working per numerous other reviewers' comments. So, I now lit the top off the water reservoir, and fill the unit that way to prevent water from entering the electronics portion of the unit.



Beside these issues, the unit is unbeatable for $100. Its clean, net setup fits perfectly in my nicely decorated house and does not make the cage area to look like a pet store. I placed the RS 400 beside my new EXO Terra 18"x18"x24" terrarium. The whole setup looks really professional and creates the environment needed for my Blue Panther Chameleon.