Randy Holmes-Farley Reef Chemist Premium Member Sep 1, 2014 #2 I am not sure what sort of reactor you mean. Do you mean GAC (granular activated carbon) and GFO as a phosphate binder? If so, any effects are small and only when first added.
I am not sure what sort of reactor you mean. Do you mean GAC (granular activated carbon) and GFO as a phosphate binder? If so, any effects are small and only when first added.