you can call me on my nos. sir if u want to deal with it. and let me tell you its results of the tests i have done with it--- total height of the bottel is 12 inches ----filled the water upto 8.5 inches and water raised near about 1/2 inch in 60-70 minuets. ----water filled upto 10 inches it raise near about 1 inch in 60 minutes. ALL ITS FUNCTIONS ARE ONLY WHEN BOTTELS ARE KEPT IN SUNLIGHT. THANKS