Years back I switched from a Ca reactor to dosing for all the advantages relating to independent and better control of what is added and when. I later concluded that for me these advantages are actually disadvantages. I switched back to a Ca reactor, with a PH controller it's set and forget for me. I adjust output to a slow drip and set the internal pH to maintain alk levels in the tank. You can increase flow rate as well to boost the output as you can only set the pH so low but IMO if you end up needing to do that the reactor is probably under sized. For some extra Ca and Alk you can add a Kalk reactor inline with the ATO which tends to work nicely with a Ca reactor as it will boost your pH.
In terms of clogging, I don't ever seem to have any issues.
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