Hello Brian,

I ran a C1502 for years on my old 135, and it worked very well. However, as the system matured I was really using up a lot of media. From what I can remember the media was exhausted after 4 months. So when I set up my 240 I went with a larger custom reactor that would hold 20lbs of media, and that would last me around 8 months. At that time the system was full of SPS and large LPS corals. It kept my Ca and Alk extremely stable at 450/10dkh. Then I added my Gigas in Feb '08 and my calcium tanked from 450 to 280 in about a weeks time. It was then that I switched to a 2 part dosing regiment. Is this your first experience with a Calcium Reactor?