Why dose Kalkwasser along with a calcium reactor?

[saintperez]

I've seen people that dose the kalk while they have the calcium reactor running as well. WOuldn't that elevate your calcium too high? What are the advantages?

 

[DLO]

Because I could crank my Calcium reactor up to meet the calcium/alk demand but the amount of co2 it would take would drop the PH way to low . Kalk burns off co2 so it helps balance it out . I ran just the reactor for a long time but as the demand increased co2 became a problem .

 

[Harry_Y]

I've seen people that dose the kalk while they have the calcium reactor running as well. WOuldn't that elevate your calcium too high? What are the advantages?

Because some tanks have a very high demand.

Kalk Raises your pH
CO2 Lowers it

Used together they ballance, and allow you
to meet the calcium demands of your tank.

 

[Paul_N]

Another major reason is the benefit of phosphate precipitation. I could maintain calcium with just my Ca reactor but built a DIY kalk reactor also because of this added benefit.