Of course it would. As long as the pump is powerful enough to pump water through both. You could tee both reactors off of the same pump and individually control the flow through each or daisy chain the two together which would mean the flow through each would be the same. In both cases you'd at least be able to change the media independently when it became exhausted.
Two reactors T'd off of one pump (not to be confused with two girls and one cup) each with its own ball valve for individual flow control.
