geo 612 calcium reactor media

[harleynut155]

i am setting up my geo 612 calcium reactor what kind of media do i use is caribsea ARM ok

[docwells]

ARM is fine. That what I have in mine at the moment. I have used crushed coral in the past without problems. Plus it is cheaper than ARM.

[old salty]

I use GenX media in my 618 as GEO states that the larger Schuran type media is recommended. I think that it is because the big stuff is less likely to turn to mush from a pH swing.

[chadfarmer]

schuran or gen-x