Sump Pump running continuously or in intervals?

So I’m building a single loop ebb and flow system with a solids lifting overflow into a radial flow settler. I’m not sure if I should run the sump pump continuously or in intervals. Sorry if this questions already been asked but I couldn’t find it. Also not sure what media to use as the media bed will be my main biofilter so looking for something with high SSA and BSA. Any advice would be much appreciated. Thanks. submitted by /u/LineGroundbreaking44
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