Hi. So do you already have a sump that doesn't have a refugium? If so you can add a remote refugium thats plumbed to your tank with a valve to adjust flow. If you have space. Problem with that is you might need a custom tank thats drilled for an overflow unless you use a simple bucket or rubbermaid tub, something thats easy to drill to provide a proper drain. A hang on fuge can be diy with an aqua clear 110 for a good pod fuge. Or there are many other options. Im sure someone who has much more experience than me will chime in. Hope this helped a bit. Good luck.
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