We have an Oceanic 180 and are very happy with it. Double check, but I am pretty sure that Oceanic will not warranty a tank that is not on their stand. I am not positive about this, so make sure to find out. We have not noticed any green "hue" in ours. Remember, when you go to move it, it is at least a 4 person job! (Minimum...more if you can.) Good luck!