Running GEO 618 Calcium Reactor with additional DIY chamber,
thanks, as a lover of "sticks", I'm thinking more and more about getting one, my tank is maturing to the point where Kalk isn't keeping up and you really need to keep Alk, Ca and Mg all rock solid, especially Alk
The key to success is keeping KH rock solid. gig you need CA reactor or 3 part for sure. Kalk is not enough.