Mixing calcium reactor with kalkwasser

What do you want to know? It's pretty common, I've been doing it for close to 9 years.

Just run kalkwasser in your top off at full concentration and then use the calcium reactor as normal. It will help keep the ph up.
 
Well my pH always stay on the low side at around 7.8 - 8.0...and now winter is coming around so the windows will be shut and therefore my pH will go even lower. I dont want to mix kalk into my 30 gallon rodi water barrel. Should I be getting a dosing machine connected to an outside kalk reactor. What are the options out there? I saw there are kalk stirrers out there but im confused...
I dont want to dose heavily...i just want to add kalk in the evening once the lights go off and early in the morning.
 
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