To speed up the process if possible set the rector output as 1drop/sec if not possible you can increase the carbon doing and please keep in mind to check the reactor output after three days. If there is a reduction in nitrate then don’t increase the carbon dosing further.I have it pretty low.
It is a regulated with a ball valve on manifold, so if I put it too low, the flow "eventually" stops. Even when I wasn't carbon dosing... not from getting clogged, but the flow just stops going IN...