I always had trouble getting my TLF reactors to seal properly causing them to leak. For that reason I left them in the sump. Nearly all fluidized media reactors are designed to work the same and have flat bottoms so that they will sit upright in a sump. I don't know of any that have integrated pumps. Deltec, Precision Marine, Vertex, Two Little Fishies, Bulk Reef Supply, Next Reef... will all do the job for you and all need to be fed from a pump or powerhead that likely is not included.
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