Eshopps.... First, thanks for sponsoring 3reef. Second, thanks for your recent sump contest. I was the lucky recipient of one of the probe holders. Appreciate it much. I am changing my sump configuration to fix one of the problems that I noted in my "sump lessons learned" from that contest. My bubble trap baffles were too close together. So I am separating them.... solved that problem. and created another.... now, my Kent Marine Float Valve that I was using for my ATO doesn't fit. It is simply too long. I was looking for a float valve with a smaller footprint and ran across yours.... Eshopps Float Valve Auto-Top Images It looks smaller but pictures can be deceiving. Do you have the dimensions for the footprint of how much clear space your system takes and possibly a picture of it installed??? Appreciate the help and thanks again. Mark PS -- I am obviously biased to buy Eshopps because of your sponsorship and the contest. Thanks again.