What to add to wet dry filter

So I fixed my overflow problem, keeping wet dry filtration for now. I plan on buying some more media to hang out in filter bags under my bio balls where the water stays nice and high other then that I have a T going off my return line so I can control the flow of my return, should I add a algae scrubber? Or would a fluidized bed filter work better as I have plenty of bio filtration my water is 0,0,10-20 depending on day of week

Tank is 220 gallon frontosa tank


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