So here is my idea for a filter providing I get the 210 gallon tank that I'm looking at. The tank is 7 foot long so I'm hoping to take up most of underneath with this design of filter leaving room for the pump of coarse. Any thoughts on the design? Any suggestions? I tried to think it out pretty sensibly putting the refugium in front of the skimmer and the reactors last. It could always be changed. Let me know your thoughts. Sorry about the picture, it's a photo of my computer screen. I have this saved as a PDF on my computer. Thanks.