OK, here is a question;
I am gravity feeding, my ca reactors from the over flow boxes in the tank, is working great, I am not even using the pumps
I know that most people use RODI water for the top off mixed with the kalk, , but it occured to me, why not use the same concept for the kalk reactor?, I can hook the incoming tube and use the pressure for the out going feeding tube, and when is time to replenish the kalk media, I'll clamp the line and refill the reactor

I already have an auto. top off hooked to the RODI system, for both tanks

so what do you guys think??

thanks

Jose