The tank is a Lee-Mar glass tank, it will have a 125 gallon sump. The flow will be provided by my 2 Tunze 6100 and if needed I will add a couple more. The tank will be only SPS as I have a Regal angel that has decided to eat LPS and clams. It will have an auto topoff, 3 sides will be viewable and I am not going to worry about humidity as I live in arizona and any humidity I can get in my house is a plus, lol. Hope that helps some, any advice would be appreciated.