Yep. I looked at them side by side. It looks like the way the flow is divided between the chambers I would need significantly more flow than I have. My new pump is 880 gph. My old pump was only 630. I probably would have been happier with the 300 but the 200 saved me 20 bucks and handled the low flow I had at the time better.
Notice the gap below the blue refugium chamber? That is the bypass to the skimmer chamber on the right. Directly behind the blue chamber is the return pump chamber.