Hi Bud, I am putting together my DIY ATS basically following your design. I have a few questions that would appreciate your kind response :- My DIY : 1) ATS box - 6" width x 7" height and 15" long. The screem area is 2" width, 7" height and 15" long. Is this area too small to allow water to be drained in time ? I drilled a 1" diameter hole at the bottom and a 1" standby hole at the side. I found water cannot be drained quick enough even without any valve in place to control the water level ; 2) My ATS box has a very loud siphoning sound. Air was siphoned to the draining hole and created a very loud siphoning sound. THis is very disruptive. Does the false bottom lid have anything to do with eliminating the siphoning effect ? Below is a video of showing how air is sucked into the draining hole .