waterflow question

[Montana]

My refugium is in the sump but with some baffels in the sump to slow down the flow and reduce bubbles i hope i will be okay. i am thinking on running a mag 18 i have a seio 1500 and a ehiem 2620 closed loop cannister filter i hope this is going to be enough but i can always add another power head. what do you think???
i just did the calculations and it is roughly 4300gph

[Ruth]

I think that a lot of us have fuges as part of the sump as getting one that is properly set up as Steve says that overflows into your display can be challenging as far as getting it set up and not look either funny or butt ugly. My experience with canister filters has not been great - they tend to get clogged up and require a lot of maintenance and also seem to really lose their flow so don't know how much I would count on that as a closed loop but if you can keep it free from sludge build up you might be fine. Baffles are not going to slow you flow down but may work well to make the air bubbles pop before getting to your return pump.

[TheReefGeek]

I had trouble putting 50x flow through a sump with 3 baffles, couldn't get rid of micro bubble problems. So I guess the key is in the design.