what's in your tank now? what are your levels: Alkalinity & Calcium?
Aside from the reactor, what else are you using?
The only thing the reactor does is add calcium & alkalinity proportionally. It doesn't set your levels right. It maintains them.
So if you have f'd up levels to begin with and you're dosing... your f'd up levels will stay out of wack until you adjust it properly. then run the reactor & it's smooth sailing after it's dialed in.